Sierra 18-9450-2 4-Stroke 20W40 FC-W Mineral Outboard Engine Oil, Quart

Sierra 18-9450-2 is a premium 4-stroke mineral outboard engine oil specifically formulated to protect marine engines operating in demanding saltwater and freshwater conditions. This FC-W certified 20W40 viscosity oil is designed as a warmer climate alternative to 10W-30, providing optimal protection for outboard engines running in higher ambient temperatures.

Key Features:

• FC-W certified marine-grade 4-stroke mineral oil meets or exceeds OEM specifications for outboard engines
• 20W40 viscosity optimized for warm weather operation and high-temperature protection
• Advanced additive package prevents rust and corrosion in marine environments
• Resists breakdown under high RPM and maximum load conditions
• Protects critical engine components including pistons, bearings, and valve trains
• Convenient quart size for easy oil changes and top-offs

This mineral-based outboard oil provides reliable lubrication for recreational and commercial marine engines, ensuring smooth operation and extended engine life even in the harshest saltwater conditions. Ideal for boaters who operate in warmer climates or during summer months when higher viscosity protection is needed.