The John Deere 4020 tractor has published engine oil capacities from 8 to 12 US quarts (7.57 to 11.36 litres), depending on the engine or fuel variant. The representative 8-quart setup is very low for the 6.0–7.9 L peer group.
Tractor engine oil specifications
John Deere · 4020 · Engine oil capacity guide
Years: 1963 – 1972Capacity: 8–12 US qt (7.57–11.36 L)Engine: 5.6–6.6 LFuel: Diesel, Gasoline, and LP gasVariants: 6
8–12 US qt (7.57–11.36 L)Engine oil capacity
5.6–6.6 LEngine size
Diesel, Gasoline, and LP gasFuel
1963 – 1972Model years
Capacity overview
Oil capacity summary
The John Deere 4020 has multiple published engine-oil capacities in this dataset. The listed capacity is 8–12 US qt (7.57–11.36 L). Oil capacity can vary by engine, fuel configuration and production revision, so the exact variant table below matters when more than one setup exists.
Tractor-engine benchmark
How this oil capacity compares
Peer values use tractors in the same engine-size class.
Engine oil capacity
Very low
8 qt
Low14 qt
This model8 qt
Average18.8 qt
High22.2 qt
Typical low and high use the 10th and 90th percentile of this engine-size group, which avoids one unusual tractor distorting the scale.
At a glance
Tractor profile
Oil capacity8–12 US qt (7.57–11.36 L)
Engine manufacturerJohn Deere
Fuel typeDiesel, Gasoline, and LP gas
Cylinders6
Displacement5.6–6.6 L
Tractor typeRow-Crop Tractor
Overview
Model information
Manufacturer
John Deere
Model
4020
Category
Farm tractor
Model years
1963 – 1972
Tractor type
Row-Crop Tractor
Engine / capacity variants
6
Engine & fuel variants
Oil-capacity variants
Different engine, fuel or production variants are shown separately when they have distinct published oil-capacity data.
Fuel
Engine
Displacement
Cyl.
Oil capacity
Litres
Variant / note
Diesel
John Deere
6.6 L
6
8 qt
7.57 L
Early Oil capacity — Oil capacity on most 4020 diesels increased from 8 to 12 quarts starting with the 1969 model year, tractor serial number 201,000. High-crop diesel tractors retained the 8-quart capacity throughout the production run. Tractors fitted with after-market turbochargers, and early tractors with replacement oil pans, may also have the higher oil capacity.
Diesel
John Deere
6.6 L
6
12 qt
11.36 L
Oil capacity — Oil capacity on most 4020 diesels increased from 8 to 12 quarts starting with the 1969 model year, tractor serial number 201,000. High-crop diesel tractors retained the 8-quart capacity throughout the production run. Tractors fitted with after-market turbochargers, and early tractors with replacement oil pans, may also have the higher oil capacity.
Diesel
John Deere
6.6 L
6
12 qt
11.36 L
Late Oil capacity — Oil capacity on most 4020 diesels increased from 8 to 12 quarts starting with the 1969 model year, tractor serial number 201,000. High-crop diesel tractors retained the 8-quart capacity throughout the production run. Tractors fitted with after-market turbochargers, and early tractors with replacement oil pans, may also have the higher oil capacity.
