AMSOIL 100% Synthetic Marine Engine Oil

  • Excellent high-stress, high-rpm endurance
  • Increased rust and corrosion protection
  • NMMA FC-W Catalyst Compatible
  • Perfect for hardcore anglers and boaters who demand the best protection for their marine engines

Product Overview

Specially engineered for marine applications. Durable formulation protects in severe conditions, from all-day trolling to high-rpm operation. Heavily fortified with advanced additives designed to prevent deposits, rust and corrosion. Use in gasoline-fueled four-stroke inboards, outboards, inboard/outboards and personal watercraft, including those made by Honda,* Mercury,* Yamaha,* Johnson/Evinrude,* Bombardier/BRP,* Suzuki,* Nissan,* Tohatsu,* OMC,* Volvo-Penta,* Mercruiser,* Chevrolet* and Ford.*

FIGHTS ENGINE WEAR

  • Naturally strong base oils resist viscosity loss due to mechanical shear.
  • Develops a tough lubricating film that protects engine parts, even in high-heat, high-rpm conditions that break down other oils.
  • 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

  • Fortified with potent inhibitors that guard against damaging rust and corrosion.
  • Protects engines during use and during inactivity or long-term storage.

NMMA CERTIFIED

  • Certified by the National Marine Manufacturers Association (NMMA) for use in four-stroke outboard motors.
  • Demonstrates outstanding performance and meets the requirements of the NMMA FC-W Catalyst Compatible specification, which is backward-compatible with the FC-W specification.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

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Product information checked: September 2026. Product formulations, specifications, applications, availability and published claims can change.
For the latest official information, consult the AMSOIL Corproate Website.

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