The John Deere L120 takes 2 quarts / 1.9 litres of engine oil.
John Deere L120 Oil Capacity and Type
Engine Oil Capacity
2 qt / 1.9 L
Recommended Oil Name
John Deere Turf-Gard
Recommended Oil Type
SAE 10W-30 gasoline engine oil
Engine
Briggs & Stratton V-Twin gasoline engine
Engine Power
20 HP or 22 HP depending on engine/year
Cylinders
2-cylinder gasoline
Cooling System
Air-cooled
Oil Filter
Replaceable engine oil filter
Oil Change Interval
Every 25 hours
How Much Oil Does a John Deere L120 Take?
The John Deere L120 takes 2 quarts / 1.9 litres of engine oil.
Use John Deere Turf-Gard 10W-30 or another quality SAE 10W-30 oil suitable for air-cooled gasoline lawn tractor engines.
Fill close to 2 quarts, run the engine briefly, shut it off, then check the dipstick and top up carefully. Do not overfill it.
Quick Specs Overview
2 qtEngine Oil
10W-30Oil Type
25 hrsOil Interval
20–22 HPEngine Power
Best Oil to Use
John Deere Turf-Gard 10W-30
SAE 10W-30 gasoline engine oil
Oil suitable for air-cooled small engines
Replace the oil filter at every oil change
Oil Capacity Comparison
L120
2 qt
L110
1.5 qt
L130
2 qt
LA120
2 qt
Oil Change Intervals
Engine Oil
Every 25 hours
Engine Oil Filter
Replace every oil change
Fuel Filter
Every 25 hours
Spark Plugs
Every 25 hours or as needed
Air Filter
Check regularly; replace as needed
Other John Deere L120 Fluid Capacities
Engine Oil
2 qt / 1.9 L
Fuel Tank
2.1 gal / 7.9 L
Transmission
Tuff Torq K46 HD hydrostatic
Transmission Oil Capacity
2.4 qt / 2.3 L
Transmission Service
Sealed unit; owner service not recommended
John Deere L120 Engine Specs
Engine
Briggs & Stratton V-Twin gasoline
Displacement
40 ci / 655 cc
Cylinders
2-cylinder
Cooling System
Air-cooled
Power
20 HP or 22 HP depending on engine/year
Starter
Electric, 12 volt
Lubrication
Full-pressure lubrication with oil filter
Common Mistakes
Overfilling past the 2 quart / 1.9 litre oil capacity
Using diesel engine oil instead of gasoline small-engine oil
Skipping the oil filter replacement
Confusing the L120 with the LA120
Trying to treat the sealed hydrostatic transmission like a normal drain-and-fill gearbox
Summary
The John Deere L120 takes 2 quarts / 1.9 litres of engine oil. The best oil choice is John Deere Turf-Gard 10W-30 or another quality SAE 10W-30 gasoline engine oil. The L120 uses a Briggs & Stratton V-Twin gasoline engine, has a 2.1 gallon fuel tank, and uses a Tuff Torq K46 HD hydrostatic transmission that is generally treated as a sealed unit.
