Sierra 118-9551-2 10W-40 FC-W Semi-Synthetic Outboard Engine Oil - 1 Quart

Sierra's 18-9551-2 is a 4-stroke synthetic blend 10W-40 marine engine oil that directly replaces Suzuki outboard oils 990C0-10W40-1QT and 990C0-01E30-QUA. This premium semi-synthetic formulation is specifically designed for the demanding conditions of marine outboard engines.

Key Features:

• NMMA FC-W Certified and API-SL rated for proven marine performance
• Semi-synthetic formulation provides superior protection under high loads and operating stress
• Direct OEM replacement for Suzuki marine engines
• 1 quart (946ml) bottle size
• 10W-40 viscosity grade for optimal flow and protection

This synthetic blend oil combines the protection benefits of synthetic oils with the cost-effectiveness of conventional lubricants, making it an excellent choice for maintaining four-stroke outboard engines. The FC-W (Four-Cycle Water-cooled) certification ensures this oil meets the strict performance standards required for marine applications, including resistance to rust, corrosion, and the unique challenges of saltwater environments.