The company refers to its larger mowers which may be used for residential or commercial applications as lawn tractors these units have either gasoline or diesel engines john deere recommends consulting your riding mower owners manual for the exact type of recommended oil a knowledge of oil viscosity can help guide you however. Type engine oil capacity w filter qts ltrs capacity w o qts ltrs type hydraulic oil capacity w filter qts john deere 2 cycle oil 501 ratio when using john deere 2 cycle lawn tractors 60 70 torq gard supreme 30 075 071 am30200m 15 . John deere tractors are extremely complicated pieces of equipment and have multiple lubrication needs midlands lubricants suitable oils includes 15w 40 e7 or e9 engine oil 10w 30 low saps engine oil tractor 10w 30 transmission fluid utto tractor transmission fluid hydraulic tractor fluid ep80w 90 gl4 or gl5 axle oil gearbox final drive oils ep80w 90 gl5 differential . I get asked who makes john deere oil and case oil all the time and the truth is it depends on the year or sometimes the month john deere simply hires the lowest bidder that can meet the spec they specify for most common non specialty tractor engine oils this usually means northland oil in waterloo ia