AMSOIL 10W-30 100% Synthetic Marine Engine Oil

Description

AMSOIL 10W-30 100% Synthetic Marine Engine Oil

Fights Engine Wear
The base oils in AMSOIL 10W-30 100% Synthetic Marine Engine Oil maintain their viscosity under mechanical stress, unlike many conventional marine oils that thin out quickly. This creates a resilient lubricating layer that shields engine components even at elevated temperatures and rpm, reducing metal-to-metal wear that can decrease performance over time.

Excellent Anti-Rust Performance
Rust protection in marine oils doesn’t come by accident, and AMSOIL’s formula includes targeted inhibitors that actively defend against corrosion during both operation and periods when the engine sits unused. This contrasts with many standard oils, which offer limited protection during long-term storage.

• Superior endurance under demanding, high-rpm conditions
• Enhanced defense against rust and corrosion
• NMMA FC-W Catalyst Compatible certified

NMMA Certified
This oil carries certification from the National Marine Manufacturers Association for use in four-stroke outboards, meeting the NMMA FC-W Catalyst Compatible standard while remaining backward-compatible with FC-W. This ensures it handles the latest emissions-control technologies without compromising protection.

• 10W-30 ‐FC-W (CAT) Registration Number: FC-00833T

APPLICATIONS
Formulated for gasoline-powered four-stroke inboards, outboards, and personal watercraft engines, including models from Honda* Mercury* Yamaha* and others.

Meets NMMA FC-W Catalyst Compatible, API SM, and JASO MA standards.

Service Life

• For four-stroke outboards and personal watercraft: Follow manufacturer recommendations, as fuel dilution or water contamination can affect oil life.
• For inboard and inboard/outboard engines: Oil changes can be extended to twice the manufacturer’s suggested interval, up to one year.

Compatibility
This AMSOIL oil blends with other synthetics and conventional motor oils, but unlike common marine oils that degrade rapidly when mixed, combining oils here reduces performance and shortens oil life. AMSOIL advises against extended drains if mixing occurs.

Use of aftermarket additives is not recommended with AMSOIL Synthetic Marine Engine Oil.

WARRANTY SECURE
This product maintains your factory warranty and is backed by AMSOIL’s Limited Warranty, serving as a reliable replacement for dealer-branded oils. Details available at AMSOIL.com/warranty/.

HEALTH & SAFETY
No health concerns are expected when used as intended; the Safety Data Sheet (SDS) is available online or by request. Keep Out of Reach of Children. Recycle used oil and containers.

* All trademarks are the property of their owners. AMSOIL products are developed for the applications shown without implied endorsement.