4-Stroke Oil

AMSOIL Synthetic 4-Stroke Oil

Follow the equipment manufacturer’s recommended drain intervals.

Formula 4-Stroke PowerSports 0W-40 (AFF)

Specially formulated for 4-stroke recreational motors, ATV's and snowmobiles. Reduces wear. Wet-clutch compatible. Contains no friction modifiers. Broad viscosity range makes it excellent for use in both hot and cold weather conditions.
Product Code: AFF Product Sheet See Pricing Information or Place an Order

Inboard and I/O applications: Change oil at two times the engine manufacturer recommended interval or one year, whichever comes first.

10W-30 Synthetic Formula 4-Stroke Marine Oil (WCT)

For use in 4-stroke gasoline fueled engines in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W approved and "warranty certified". For use in 4-stroke outboard and marine nboard engines. Also excellent for personal watercraft.
Product Code: WCT Product Sheet See Pricing Information or Place an Order

10W-40 Synthetic Formula 4-Stroke Marine Oil (WCF)

For use in 4-stroke gasoline fueled engines in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W approved and "warranty certified". For use in 4-stroke outboard and marine nboard engines. Also excellent for personal watercraft.
Product Code: WCF Product Sheet See Pricing Information or Place an Order

AMSOIL Formula 4-Stroke Synthetic Small Engine Oil is a long-life formulation that can last longer than conventional petroleum oils. It provides an extra measure of protection when equipment typically goes longer between oil changes than is recommended by the equipment manufacturer. Due to wide variances in operating conditions and maintenance practices, AMSOIL recommends extending drain intervals when monitored by oil analysis or following the equipment manufacturer-established drain intervals.

Formula 4-Stroke 10W-30/SAE 30 Small Engine Oil (ASE)

Commercial-grade formulation for hot temperature, severe service operation of small engines where routine maintenance is often difficult or infrequent. Use wherever SAE 10W-30 or SAE 30 oil is specified in gasoline or diesel engines, transmissions, hydraulics and chaincases.
Product Code: ASE Product Sheet See Pricing Information or Place an Order

Formula 4-Stroke Synthetic 10W-40 Scooter Oil (ASO)

Meets the needs of today's high-tech air- and water-cooled four-stroke motorized scooters. Unsurpassed wear protection and friction reduction for longer equipment life. Protects transmissions and gear boxes. Wet-clutch compatible to insure smooth clutch operation. Provides long-term protection during storage.
Product Code: ASO Product Sheet See Pricing Information or Place an Order

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For your convenience, AMSOIL offers Ea Oil Filters guaranteed for up to 15,000 miles or up to 25,000 miles, depending on application, when used with AMSOIL synthetic motor oil.

Application Guide - Click here to find the correct filter for your application.

Master Cross Reference Guide - Click here to determine which AMSOIL filter can be used to replace your existing filter by part number.

More Information - Click here to learn more about Ea Oil Filters.

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