Description
The Sierra 25W-40 FC-W Synthetic Blend Oil is formulated with a premium combination of synthetic and mineral base stocks to deliver reliable lubrication for sterndrive and inboard marine engines. Designed to handle the high stress and load conditions common in marine environments, it provides advanced protection against wear and friction to support long-term engine performance. Its formulation offers strong corrosion resistance while helping maintain oil stability under high RPMs, extreme temperatures, and heavy operating loads. Engineered with performance-driven additives, it supports consistent lubrication and durability in demanding conditions. NMMA FC-W certified and meeting API SL standards, this oil is built for dependable marine engine protection.
Features
- Synthetic blend formula combines premium synthetic and mineral base stocks
- Provides advanced lubrication and wear protection for sterndrive and inboard engines
- Helps reduce friction and protect internal engine components
- Maintains stability under high RPMs, extreme temperatures, and heavy loads
- NMMA FC-W certified and meets API SL performance standards
- Superior corrosion protection
- Advanced lubrication for reduction of wear to internal engine components
- Outstanding friction reduction and wear protection
- Removes thermal breakdown under high RPM’s, extreme temperatures and loads
- Extensively tested for outstanding performance
- NMMA FC-W Certified/API-SL
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