Description
The Sierra 25W-40 FC-W Synthetic Blend Catalyst Oil is formulated for modern 4-stroke marine engines, including those equipped with emission catalyst systems. Designed to meet demanding marine requirements, it provides enhanced corrosion protection while helping minimize internal engine buildup and sludge formation. Its advanced detergent properties support cleaner engine operation, while the synthetic blend formulation maintains stability under extreme temperatures and high-performance conditions. Utilizing ZDDP anti-wear additive technology, it helps protect critical engine components and reduce wear over time. NMMA FC-W certified and meeting API SL standards, this oil is engineered to deliver reliable performance and extended engine life in marine environments.
Features
- Designed for modern 4-stroke engines with or without catalyst systems
- Provides enhanced corrosion protection and helps reduce internal buildup
- Advanced detergent properties help prevent sludge formation
- ZDDP anti-wear technology supports long-term engine protection
- Maintains stability under extreme temperatures and high-performance conditions
- Displays enhanced detergent properties to suspend and prevent engine sludge formation
- Industry leading wear protection and deposit control
- Prevents excessive thinning under extreme performance operations
- Capitalizing on “ZDDP” anti-wear additive technology
- Prevents phosphorous depletion and extends the emission catalyst life
- NMMA FC-W Certified/API-SL
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