The John Deere 9120 tractor has a published engine oil capacity of 28 US quarts (26.5 litres). For tractors in the 8.0–9.9 L engine-size class, that is above average versus a peer average of 24.3 quarts. For a routine oil change, having 7 × 1-gal jugs (about exact) on hand covers the published capacity.
The John Deere 9120 has one published engine-oil capacity in this dataset. The listed capacity is 28 US qt (26.5 L). Oil capacity can vary by engine, fuel configuration and production revision, so confirm the specification for the exact tractor before servicing.
Tractor-engine benchmark
How this oil capacity compares
Peer values use tractors in the same engine-size class.
Engine oil capacity
Above average
28 qt
Low20 qt
This model28 qt
Average24.3 qt
High29.6 qt
Typical low and high use the 10th and 90th percentile of this engine-size group, which avoids one unusual tractor distorting the scale.
