100% Synthetic Marine Engine Oil 10W30 or 10W40

from $30.00

AMSOIL Synthetic Marine Engine Oil 10W-30 & 10W-40 AMSOIL Synthetic Marine Engine Oil is a premium synthetic formulation designed to withstand the heat and stress of high-rpm operation and deliver excellent wear protection. It protects against rust and corrosion during periods of inactivity and long-term storage to keep your engine protected, even when it’s not running. AMSOIL Synthetic Marine Engine Oil is perfect for hardcore anglers and boating enthusiasts who demand the best protection for their marine engines.

  • Excellent high-stress, high-rpm endurance

  • Increased rust and corrosion protection

  • NMMA FC-W Catalyst Compatible

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AMSOIL Synthetic Marine Engine Oil 10W-30 & 10W-40 AMSOIL Synthetic Marine Engine Oil is a premium synthetic formulation designed to withstand the heat and stress of high-rpm operation and deliver excellent wear protection. It protects against rust and corrosion during periods of inactivity and long-term storage to keep your engine protected, even when it’s not running. AMSOIL Synthetic Marine Engine Oil is perfect for hardcore anglers and boating enthusiasts who demand the best protection for their marine engines.

  • Excellent high-stress, high-rpm endurance

  • Increased rust and corrosion protection

  • NMMA FC-W Catalyst Compatible

AMSOIL Synthetic Marine Engine Oil 10W-30 & 10W-40 AMSOIL Synthetic Marine Engine Oil is a premium synthetic formulation designed to withstand the heat and stress of high-rpm operation and deliver excellent wear protection. It protects against rust and corrosion during periods of inactivity and long-term storage to keep your engine protected, even when it’s not running. AMSOIL Synthetic Marine Engine Oil is perfect for hardcore anglers and boating enthusiasts who demand the best protection for their marine engines.

  • Excellent high-stress, high-rpm endurance

  • Increased rust and corrosion protection

  • NMMA FC-W Catalyst Compatible

Fights Engine Wear

AMSOIL Synthetic Marine Engine Oil’s naturally strong base oils resist viscosity loss due to mechanical shear. It develops a tough lubricating film that protects engine parts, even in high-heat, high-rpm conditions that break down other oils. AMSOIL Marine Engine Oil contains robust anti-wear additives that further reduce wear in metal-to-metal contact regions, guarding against compression loss for maximum power and engine life.

Excellent Anti-Rust Performance

Good rust protection is not natural to motor oil; it comes only by design. AMSOIL Synthetic Marine Engine Oil is fortified with potent inhibitors that guard against damaging rust and corrosion. It protects engines during use and during inactivity or long-term storage.

NMMA Certified

AMSOIL Synthetic Marine Engine Oil is certified by the National Marine Manufacturers Association (NMMA) for use in four-stroke outboard motors. This high-quality oil demonstrates outstanding performance and meets the requirements of the NMMA FC-W Catalyst Compatible specification, which is backward-compatible with the FC-W specification. • 10W-40 – FC-W (CAT)® Registration Number: FC-00850T • 10W-30 – FC-W (CAT)® Registration Number: FC-00833T

APPLICATIONS Use in gasoline-fueled four-stroke inboards, outboards, inboard/outboards, supercharged watercraft engines and personal watercraft, including those made by Honda,* Mercury,* Yamaha,* Johnson/Evinrude,* Bombardier/BRP,* Suzuki,* Nissan,* Tohatsu,* OMC,* Volvo-Penta,* Mercruiser,* Chevrolet* and Ford.* NMMA FC-W Catalyst Compatible • API SM • JASO MA SERVICE LIFE • Four-stroke outboard motors and personal watercraft applications: Change oil at the engine or watercraft manufacturer-recommended interval due to potential fuel dilution or water contamination. • Inboard and I/O applications: Change oil at two times the engine manufacturer-recommended interval or one year, whichever comes first. COMPATIBILITY AMSOIL Synthetic Marine Engine Oil is compatible with other synthetic and conventional motor oils. Adding other oils, however, will shorten the life expectancy of AMSOIL motor oil and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed. Aftermarket oil additives are not recommended for use with AMSOIL Synthetic Marine Engine Oil.