Sierra 18-9552-3 25W-50 FC-W 4-Cycle Outboard Synthetic Blend Oil 4 Liter

Sierra 18-9552-3 is a premium 25W-50 synthetic blend oil specifically formulated for marine 4-cycle outboard and inboard engines without catalytic converters. This high-performance oil meets NMMA FC-W and API SL specifications, ensuring superior protection for marine engines operating in demanding conditions.

Key Features:

• 25W-50 viscosity grade provides excellent protection across a wide temperature range
• NMMA FC-W certified for marine 4-cycle engines
• API SL rated for superior engine protection
• Synthetic blend formula offers enhanced lubrication and thermal stability
• Special marine additives protect against rust and corrosion in saltwater and freshwater environments
• Reduces engine wear and extends engine life
• 4-liter bottle provides convenient quantity for oil changes

This oil is ideal for recreational and commercial marine applications where maximum engine protection is required. The synthetic blend formulation provides better flow characteristics at startup and maintains viscosity at high operating temperatures, making it perfect for the unique demands of marine engines.