The International Harvester 686 tractor has a published engine oil capacity of 12 US quarts (11.36 litres). For tractors in the 5.0–5.9 L engine-size class, that is below average versus a peer average of 13.4 quarts. For a routine oil change, having 3 × 1-gal jugs (about exact) on hand covers the published capacity.
Tractor engine oil specifications
International Harvester · 686 · Engine oil capacity guide
The International Harvester 686 has one published engine-oil capacity in this dataset. The listed capacity is 12 US qt (11.36 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
Below average
12 qt
Low9.5 qt
This model12 qt
Average13.4 qt
High17.3 qt
Typical low and high use the 10th and 90th percentile of this engine-size group, which avoids one unusual tractor distorting the scale.
