verifiedOEM-verified data
Lawn Mower Oil Capacity
Oil specs for lawn mowers, generators, pressure washers, and outdoor power equipment — Briggs & Stratton, Honda, Kawasaki, Kohler.
23 equipment models4 active brands
infoSmall engine oil capacity is typically measured in fluid ounces (fl oz) or milliliters (ml), not quarts. We display both.
Briggs & Stratton
Engine / ModelDisplacementOil CapacityViscosity
450E Series
Push mower, single cylinder
550EX Series
Walk-behind mower
675EXi Series
Self-propelled mower
Professional 850 Series
Commercial / zero-turn
Intek V-Twin 18–26 HP
Riding mower / lawn tractor
Vanguard 23–26 HP V-Twin
Commercial zero-turn
Honda
Engine / ModelDisplacementOil CapacityViscosity
GCV160
HRR / HRX mowers
GCV190
HRX217 self-propelled
GX390
Commercial / generator / tiller
Kawasaki
Engine / ModelDisplacementOil CapacityViscosity
FR651V / FR691V
V-twin riding mower
FX850V
Commercial zero-turn
Kohler
Engine / ModelDisplacementOil CapacityViscosity
Courage SV540
Single cylinder riding mower
Command Pro CH740
Commercial V-twin
Small Engine Oil — Key Differences from Automotive
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Use SAE 30 or 10W-30
Most small 4-stroke engines specify SAE 30 above 40°F, or 10W-30 for varying temperatures. Do not use car grades like 0W-20.
schedule
Change every 25–50 hours
Small engines change by run-time hours, not miles. First change after 5 hours on a new engine, then every 25–50 hours.
warning
Avoid 2-stroke oil in 4-stroke engines
Most modern mowers are 4-stroke with separate fuel and oil systems. Never mix 2-stroke oil into 4-stroke fuel.
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Check before each season
At the start of each season, drain old oil (if stored over winter) and refill with fresh oil before first use.