AMSOIL Formula 4-Stroke® 100% Synthetic Scooter Oil
AMSOIL 4-Stroke Oil
Fully synthetic SAE 10W-40 lubricant engineered for the special demands of air- and water-cooled four-stroke motorized scooter engines, transmissions.
AMSOIL products
AMSOIL 4-Stroke Oil
Synthetic four-stroke oil for small engines, scooters, outdoor power equipment, and powersports applications.
AMSOIL 4-stroke oil
Buy AMSOIL 4-stroke oil for small engines, generators, mowers, scooters, and 4-stroke powersports applications, including the Formula 4-Stroke Powersports 0W-40, scooter oil, and 10W-30, 10W-40, and 15W-50 small-engine viscosities.
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Shop by Product Type
Start with a product family, then use the AMSOIL online lookup guide to choose the formula and viscosity that fits your application.
Formula 4-Stroke
AMSOIL Formula 4-Stroke® Powersports 0W-40 Synthetic Motor Oil
AMSOIL 4-Stroke Oil
SAE 40-weight synthetic built for four-stroke ATV, UTV, and snowmobile use, plus other four-stroke powersports applications that call for 0W-30, 0W-40.
Viscosity-Based Formulas
AMSOIL 15W-50 100% Synthetic Small Engine Oil
AMSOIL 4-Stroke Oil
Heaviest grade in the commercial-grade synthetic small-engine family, formulated for 4-stroke outdoor power equipment that calls for an SAE 50, 10W-50.
Semi-Synthetic Bar
AMSOIL Semi-Synthetic Bar and Chain Oil
AMSOIL 4-Stroke Oil
Tacky bar oil formulated to lubricate the guide bar, drive sprocket, and saw chain on gas and electric chainsaws across light, medium, and heavy-duty cutting.
Racing
Briggs & Stratton Synthetic 4T Racing Oil
AMSOIL 4-Stroke Oil
Co-branded synthetic competition oil developed jointly by Briggs & Stratton engineers and AMSOIL for stock.