Reference Charts

Fluid & Spec Charts

A chart for every covered Ford model: core specifications, fluid capacities by compartment, and both the original oil recommendations and their practical modern equivalents.

Find your model

Suffixes like -D, -L, or -S share the base model's chart. Or jump to a series:

Fordson N Series NAA / Golden Jubilee Hundred Series '01 Workmaster & Powermaster Series Early Thousand Series (4-cylinder)Thousand Series (3-cylinder era)

Fordson

1917–1945

Fordson Model F

1917-1928 · Fordson

Engine: Ford 251 ci (4.1L) 4-cylinder kerosene/distillate (earliest engines built by Hercules)
Horsepower: 20 hp @ 1000 rpm rated; ~12.3 drawbar / 22.3 belt hp as tested
Transmission: 3-speed constant-mesh gear with worm-drive final drive
PTO: No PTO — belt pulley (9.5 in, 1000 rpm)
Hydraulics: None

Engine oil

9 qts (splash-lubricated — do not overfill)

Transmission

About 3.5 gal, shared transmission and worm-drive housing

Hydraulics

None — no hydraulic system

Rear axle

Shared with the transmission/worm-drive housing

Fluid & oil recommendations

Engine oil: Period spec was seasonal straight-grade oil — lighter in winter, heavier in summer. SAE 30 is the common modern choice in a sound engine. Kerosene running dilutes the oil, so period practice was a change roughly every 50 working hours.
Transmission: Heavy mineral gear oil. Use GL-1 (non-EP) — modern EP additives can attack the bronze in the worm final drive.
Hydraulics: Not applicable.
Rear axle: Same fill as the transmission/worm-drive housing.

Splash lubrication and the water-washer air intake make oil and water checks part of daily operation. Capacities are from period manuals and owner references — published Fordson figures vary more than any later Ford, so confirm against your own manual.

Fordson Model N

1929-1945 · Fordson

Engine: Ford 267 ci (4.4L) 4-cylinder kerosene or gasoline
Horsepower: 26 engine hp; ~18.3 drawbar / 29.1 belt hp as tested
Transmission: 3-speed gear with worm-drive final drive
PTO: PTO optional on later tractors; belt pulley standard
Hydraulics: None from the factory

Engine oil

Not consistently published — fill to the dipstick mark and check the level at least twice daily (Ford's own guidance)

Transmission

Approximately 3.5 gal (Ford's published figure)

Hydraulics

None from the factory

Rear axle

Shared with the transmission housing

Fluid & oil recommendations

Engine oil: Ford's period recommendation: SAE 20 for the first 50 days of winter, SAE 30 for the rest of winter, SAE 40 in normal weather — change about every 50 working hours. SAE 30 year-round is the common modern choice.
Transmission: Ford-approved heavy gear oil, changed every 200 hours. GL-1 mineral gear oil is the safe modern equivalent around the worm drive.
Hydraulics: Not applicable.
Rear axle: Same fill as the transmission housing. The steering box takes an extreme-pressure lubricant, checked every 200 hours.

Fluid guidance comes from Ford's own wartime maintenance instructions (1942). The oil-bath air cleaner holds about 6 pints of clean engine oil, and there are 19 grease points — the steering gear wants the grease gun nightly in season.

N Series

1939–1952

Ford 9N

1939-1942 · N Series

Engine: Ford 119.7 ci 4-cylinder gasoline
Horsepower: ~23 drawbar hp / ~26 belt hp
Transmission: 3-speed gear
PTO: Transmission PTO
Hydraulics: Shared sump hydraulic / transmission / differential

Engine oil

6 qts

Transmission

20 qts combined sump

Hydraulics

20 qts combined sump

Rear axle

20 qts combined sump

Fluid & oil recommendations

Engine oil: Originally seasonal straight-grade oil; practical modern choice is SAE 30 or 10W-30 in a sound gasoline engine.
Transmission: Original-style choice: GL-1 mineral gear oil SAE 90 above freezing or SAE 80 in colder weather.
Hydraulics: Same shared sump as transmission and differential.
Rear axle: Same shared sump as transmission and hydraulic system.

The 9N uses one common reservoir for transmission, hydraulic system, and differential. Treat it as a shared-sump tractor when servicing fluids.

Ford 2N

1942-1947 · N Series

Engine: Ford 2.0L 4-cylinder gasoline
Horsepower: ~23.9 belt hp / ~16.9 drawbar hp
Transmission: 3-speed gear
PTO: Transmission PTO
Hydraulics: Shared sump hydraulic / transmission / differential

Engine oil

6 qts

Transmission

20 qts combined sump

Hydraulics

20 qts combined sump

Rear axle

20 qts combined sump

Fluid & oil recommendations

Engine oil: Originally straight-grade seasonal oil; practical modern choice is 10W-30 or SAE 30 in a sound gasoline engine.
Transmission: Original-style choice: GL-1 mineral gear oil SAE 90 above freezing or SAE 80 in colder weather.
Hydraulics: Same shared sump as transmission and differential.
Rear axle: Same shared sump as transmission and hydraulic system.

The 2N uses one common reservoir for transmission, hydraulic system, and differential. Fill and level procedures matter because all three systems share the same oil.

Ford 8N

1947-1952 · N Series

Engine: Ford 119.7 ci 4-cylinder gasoline
Horsepower: ~23.2 PTO hp / ~27.3 belt hp
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulic system in shared sump layout

Engine oil

6 qts

Transmission

20 qts combined sump

Hydraulics

20 qts combined sump

Rear axle

20 qts combined sump

Fluid & oil recommendations

Engine oil: Original manuals used seasonal straight grades. Practical modern choice: SAE 30 or 10W-30 in a healthy gas engine.
Transmission: Original-style choice: Ford M4864A above 32°F / M4864B below 32°F, commonly interpreted today as GL-1 SAE 90 above freezing and SAE 80 in colder weather.
Hydraulics: Same shared sump as transmission and differential.
Rear axle: Same shared sump as transmission and hydraulic system.

This tractor uses one common sump for transmission, hydraulics, and differential. Many owners use UTF today, but the original-style recommendation was mineral gear oil in the shared sump.

NAA / Golden Jubilee

1953–1954

Ford NAA / Golden Jubilee

1953-1954 · NAA / Golden Jubilee

Engine: Ford 134 ci Red Tiger gasoline
Horsepower: ~31.1 belt hp / ~26.8 drawbar hp
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Live hydraulics

Engine oil

5 qts

Transmission

5 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Practical modern choice: 10W-30 or 15W-40 for a gasoline engine in normal service.
Transmission: Original-style recommendation: SAE 90 above 32°F, SAE 80 below 32°F.
Hydraulics: Original-style recommendation: Type A hydraulic oil above 32°F, Type C hydraulic oil below 32°F. Practical modern substitute: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 above 32°F, SAE 80 below 32°F.

Unlike the N-series shared sump tractors, the NAA separates engine, transmission, hydraulic, and rear axle reservoirs.

Hundred Series

1955–1957

Ford 640

1955-1957 · 600 Series

Engine: Ford 134 ci Red Tiger gasoline or LP
Horsepower: ~31-32 PTO hp
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2.25 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Practical modern choice: 10W-30 or 15W-40 for gasoline models.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; many owners standardize on UTF if leakage between compartments is a concern.

The 640 is the Hundred Series predecessor to the 641.

Ford 650

1955-1957 · 600 Series

Engine: Ford 134 ci Red Tiger gasoline or LP
Horsepower: ~31-32 PTO hp
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Practical modern choice: 10W-30 or 15W-40 for gasoline models.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used when standardizing fluids.

The 650 shares the 600-family engine and chassis with a 5-speed transmission package.

Ford 660

1955-1957 · 600 Series

Engine: Ford 134 ci Red Tiger gasoline or diesel
Horsepower: ~31-32 PTO hp
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is commonly used as a modern all-around substitute.

The 660 is a common sweet-spot Hundred Series model because it combines the 134 engine with a 5-speed and live PTO.

Ford 740

1955-1957 · 700 Series

Engine: Ford 134 ci Red Tiger gasoline or LP
Horsepower: ~31-32 PTO hp
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Practical modern choice: 10W-30 or 15W-40 for gasoline models.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 740 is the row-crop counterpart to the 640.

Ford 750

1955-1957 · 700 Series

Engine: Ford 134 ci Red Tiger gasoline or LP
Horsepower: ~31-32 PTO hp
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Practical modern choice: 10W-30 or 15W-40 for gasoline models.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 750 is the row-crop Hundred Series 134 ci model with a 5-speed transmission.

Ford 760

1955-1957 · 700 Series

Engine: Ford 134 ci Red Tiger gasoline or diesel
Horsepower: ~31-32 PTO hp
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is commonly used.

The 760 is the row-crop 134 ci Hundred Series model with a 5-speed and live PTO.

Ford 840

1955-1957 · 800 Series

Engine: Ford 172 ci gasoline or LP
Horsepower: ~40 PTO hp class
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2.25 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 800 family steps up to the 172 ci engine and heavier chassis than the 600 family.

Ford 850

1955-1957 · 800 Series

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 850 is a common general-purpose Hundred Series tractor with the 172 engine and 5-speed transmission.

Ford 860

1955-1957 · 800 Series

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used as a practical standardization choice.

The 860 is the Hundred Series counterpart to the later 861 and is often favored for live PTO.

Ford 940

1955-1957 · 900 Series

Engine: Ford 172 ci gasoline or LP
Horsepower: ~40 PTO hp class
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 940 is the row-crop counterpart to the 840.

Ford 950

1955-1957 · 900 Series

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 950 is the row-crop 172 ci Hundred Series model with a 5-speed transmission.

Ford 960

1955-1957 · 900 Series

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 960 is the row-crop 172 ci Hundred Series model with a 5-speed and live PTO.

'01 Workmaster & Powermaster Series

1958–1962

Ford 641

1958-1962 · 601 Workmaster

Engine: Ford 134 ci Red Tiger gasoline or 144 ci diesel
Horsepower: ~31.8 PTO hp (gas) / ~42.6 gross hp
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil. Many owners use UTF across all compartments as a practical modern substitute.

This is the x01-series successor to the 640. Transmission, hydraulic, and rear axle compartments are separate on this tractor.

Ford 651

1958-1962 · 601 Workmaster

Engine: Ford 134 ci Red Tiger gasoline or diesel
Horsepower: ~31-32 PTO hp class
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 651 uses the 601 chassis with the 5-speed transmission package.

Ford 661

1958-1962 · 601 Workmaster

Engine: Ford 134 ci Red Tiger gasoline or diesel
Horsepower: ~31-32 PTO hp class
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used as a modern one-fluid solution.

The 661 is one of the most desirable 601 tractors because it pairs the 5-speed with live PTO.

Ford 671

1958-1962 · 601 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: Select-O-Speed with single-speed PTO
PTO: Independent PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 671 is the 601-series Select-O-Speed model. Transmission service information should be confirmed against your exact transmission documentation before filling.

Ford 681

1958-1962 · 601 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: Select-O-Speed with dual / ground-speed PTO
PTO: Independent + ground-speed PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 681 is the 601-series Select-O-Speed model with dual / ground-speed PTO. Confirm Select-O-Speed service data before filling the transmission.

Ford 741

1958-1962 · 701 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 741 is the row-crop counterpart to the 641.

Ford 751

1958-1962 · 701 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 751 is the row-crop 134/144 ci x01 model with a 5-speed transmission.

Ford 761

1958-1962 · 701 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

6 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 761 is the row-crop 134/144 ci x01 model with a 5-speed and live PTO.

Ford 771

1958-1962 · 701 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: Select-O-Speed with single-speed PTO
PTO: Independent PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 771 is the row-crop Select-O-Speed x01 model. Confirm Select-O-Speed service data before filling.

Ford 781

1958-1962 · 701 Workmaster

Engine: Ford 134 ci gasoline or 144 ci diesel
Horsepower: ~31-32 PTO hp class
Transmission: Select-O-Speed with dual / ground-speed PTO
PTO: Independent + ground-speed PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 781 is the row-crop Select-O-Speed x01 model with dual / ground-speed PTO. Confirm Select-O-Speed service data before filling.

Ford 841

1958-1962 · 801 Powermaster

Engine: Ford 172 ci gasoline or 172 ci diesel
Horsepower: ~40 PTO hp class
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 841 is the x01-series 801 Powermaster with a 4-speed transmission.

Ford 851

1958-1962 · 801 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 851 is the x01-series 801 Powermaster with a 5-speed transmission.

Ford 861

1958-1962 · 801 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used as a practical all-around choice.

The 861 is a high-value x01-series model because it combines the 172 engine, 5-speed, and live PTO.

Ford 871

1958-1962 · 801 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: Select-O-Speed with single-speed PTO
PTO: Independent PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 871 is the 801-series Select-O-Speed model. Confirm Select-O-Speed service data before filling the transmission.

Ford 881

1958-1962 · 801 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: Select-O-Speed with dual / ground-speed PTO
PTO: Independent + ground-speed PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 881 is the 801-series Select-O-Speed model with dual / ground-speed PTO. Confirm Select-O-Speed service data before filling.

Ford 941

1958-1962 · 901 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 4-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 941 is the row-crop counterpart to the 841.

Ford 951

1958-1962 · 901 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 951 is the row-crop 172 ci x01 model with a 5-speed transmission.

Ford 961

1958-1962 · 901 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: 5-speed gear with live PTO
PTO: Live PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

8 qts

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original-style recommendation: SAE 80 Mild EP. Common modern alternative: UTF meeting Ford/New Holland M2C134D.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 961 is the row-crop 172 ci x01 model with a 5-speed and live PTO.

Ford 971

1958-1962 · 901 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: Select-O-Speed with single-speed PTO
PTO: Independent PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 971 is the 901-series Select-O-Speed row-crop model. Confirm Select-O-Speed service data before filling the transmission.

Ford 981

1958-1962 · 901 Powermaster

Engine: Ford 172 ci gasoline or diesel
Horsepower: ~40 PTO hp class
Transmission: Select-O-Speed with dual / ground-speed PTO
PTO: Independent + ground-speed PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Refer to exact Select-O-Speed service data

Hydraulics

2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: Original-style recommendation: SAE 90 gear oil; UTF is also commonly used.

The 981 is the 901-series Select-O-Speed row-crop model with dual / ground-speed PTO. Confirm Select-O-Speed service data before filling.

Early Thousand Series (4-cylinder)

1962–1964

Ford 21203

1962-1964 · Early 4-cylinder Thousand Series (2000 family)

Engine: 134 ci gasoline or 144 ci diesel family
Horsepower: ~31-34 hp class
Transmission: 4-speed with hydraulics and PTO
PTO: Transmission PTO
Hydraulics: Open-center hydraulics

Engine oil

5 qts

Transmission

Verify by exact transmission case

Hydraulics

About 2 gal

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Use fluid appropriate to the exact 4-cylinder thousand-series transmission configuration after confirming the stamped model.
Hydraulics: Practical modern choice: UTF meeting Ford/New Holland M2C134D.
Rear axle: UTF or appropriate gear oil depending on compartment setup and service approach.

Decoded as an early four-cylinder 2000-family utility chassis model. Because early 5-digit thousand-series codes can vary by exact transmission and equipment package, verify against the tractor’s stamped model and service documentation before filling.

Ford 41204

1962-1964 · Early 4-cylinder Thousand Series (4000 family)

Engine: 172 ci gas, LP, or diesel family
Horsepower: ~40 hp class
Transmission: Select-O-Speed without hydraulics or PTO
PTO: No PTO indicated by this code
Hydraulics: Configuration-specific

Engine oil

5 qts

Transmission

Verify exact Select-O-Speed service requirement

Hydraulics

Configuration-specific

Rear axle

8 qts

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Verify the exact Select-O-Speed fluid requirement before filling; do not assume it matches a standard gear transmission.
Hydraulics: Confirm whether your exact tractor has the hydraulic package indicated by its stamped configuration.
Rear axle: UTF or appropriate gear oil depending on compartment setup and service approach.

Decoded as an early four-cylinder 4000-family code. This version provides a practical family-level reference, but early 5-digit codes should still be verified against the tractor’s stamped model and service documentation.

Thousand Series (3-cylinder era)

1965–1975

Ford 2000 (3-cylinder)

1965-1975 · Thousand Series

Engine: Ford 158 ci 3-cylinder gasoline or diesel
Horsepower: ~31-32 PTO hp (32.1 tested)
Transmission: 4-, 6-, 8-speed gear or 12-speed (4-speed with over/under)
PTO: Transmission 540 PTO; live PTO with the 8- and 12-speed
Hydraulics: Open-center, 2500 psi

Engine oil

8 qts per the operator's manual (sales literature lists 6-8 depending on year)

Transmission

4-speed: 6.6 qts · 12-speed over/under: 7 qts · 8-speed: 13.2 qts

Hydraulics

6.3 gal shared rear-axle / hydraulic sump

Rear axle

Shared with the hydraulic sump (6.3 gal total)

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Original spec ESN-M2C77-A gear oil; UTF meeting Ford/New Holland M2C134D is the common modern fill.
Hydraulics: UTF meeting Ford/New Holland M2C134D.
Rear axle: Same UTF fill as the hydraulic sump.

An entirely different machine from the 1962-64 four-cylinder 2000 despite the shared name. C-prefixed serials are U.S.-built; B is Basildon, A is Antwerp.

Ford 3000

1965-1975 · Thousand Series

Engine: Ford 158 ci gasoline or 175 ci diesel, 3-cylinder
Horsepower: ~37-40 PTO hp (40.6 tested)
Transmission: 4-, 6-, 8-speed gear, 12-speed over/under, or 10-speed Select-O-Speed
PTO: Transmission, live, or independent 540 (540/1000 with Select-O-Speed)
Hydraulics: Open-center, 2500 psi, 5 gpm

Engine oil

8 qts (gas and diesel)

Transmission

4-speed over/under: 7 qts · 8-speed: 13.2 qts · Select-O-Speed: 11 qts

Hydraulics

6.3 gal shared rear-axle / hydraulic sump

Rear axle

Shared with the hydraulic sump (6.3 gal total)

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Gear transmissions: original spec ESN-M2C77-A; UTF meeting Ford/New Holland M2C134D is the common modern fill. Select-O-Speed used its own fluid (Ford M2C41) — do not fill it with gear oil.
Hydraulics: UTF meeting Ford/New Holland M2C134D.
Rear axle: Same UTF fill as the hydraulic sump.

The 4-speed over/under option was dropped in 1970 in favor of the 6-speed. The stamped model code, production code, and serial live behind the starter — the decoder and serial lookup read all three.

Ford 4000 (3-cylinder)

1965-1975 · Thousand Series

Engine: Ford 192 ci gasoline (201 ci from 1968) or 201 ci diesel, 3-cylinder
Horsepower: ~52 PTO hp (52.7 tested)
Transmission: 8-speed Dual Range gear or 10-speed Select-O-Speed
PTO: Transmission or independent 540/1000
Hydraulics: Open-center, 2500 psi, 5.4 gpm

Engine oil

8 qts

Transmission

8-speed: 13.2 qts (17 qts with independent PTO) · Select-O-Speed: 12.3 qts

Hydraulics

8.4 gal (transmission PTO) or 8.1 gal (independent PTO), shared rear sump

Rear axle

Shared with the hydraulic sump

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Gear transmission: UTF meeting Ford/New Holland M2C134D as the modern fill. Select-O-Speed used Ford's own fluid (M2C41) — confirm before filling.
Hydraulics: UTF meeting Ford/New Holland M2C134D.
Rear axle: Same UTF fill as the hydraulic sump.

The three-cylinder 4000 that debuted in 1965 is an entirely different tractor from the 801-based four-cylinder 4000 it replaced. Wet disc brakes and inboard planetary final drives.

Ford 5000

1965-1976 · Thousand Series

Engine: Ford 233 ci 4-cylinder gasoline or diesel
Horsepower: ~56-60 PTO hp (60.4 tested)
Transmission: 8-speed gear, 10-speed Select-O-Speed, or 16-speed Dual Power
PTO: Independent 540 or 540/1000, wet clutch
Hydraulics: Open-center, 2500 psi, 6 gpm

Engine oil

Confirm in the operator's manual for your engine — the 233 holds more than the 3-cylinder tractors

Transmission

Varies by transmission (8-speed, Select-O-Speed, or Dual Power) — confirm in the operator's manual

Hydraulics

8.7 gal shared rear sump

Rear axle

Shared with the hydraulic sump (8.7 gal total)

Fluid & oil recommendations

Engine oil: Gas models: 10W-30 or 15W-40. Diesel models: diesel-rated 15W-40.
Transmission: Gear transmissions: UTF meeting Ford/New Holland M2C134D as the modern fill. Select-O-Speed used Ford's own fluid (M2C41) — confirm before filling.
Hydraulics: UTF meeting Ford/New Holland M2C134D.
Rear axle: Same UTF fill as the hydraulic sump.

The big tractor of the range and the only 4-cylinder among the 1965-75 blue Fords covered here. U.S. serials share the same C-prefix year breaks as the 2000/3000/4000.

Capacities and recommendations compiled from Ford operator manuals and period service references, with practical modern fluid equivalents noted. Compartment layouts changed between series — several early tractors share one sump across transmission, hydraulics, and differential — so always confirm which compartments your tractor actually has before draining and filling. When in doubt, UTF meeting Ford/New Holland M2C134D is the common modern standardization for non-engine compartments.