Sierra Stern Drive 4-Stroke Engine Oil 25W-40

Sierra Stern Drive 4-Stroke Engine Oil 25W-40 formulated to protect from corrosion while providing lubrication for Stern Drive and inboard engines that operate under high stress and loads.

• Outperforms standard 4-Stroke automotive lubricants as it is specially developed for marine environments
• Offers high levels of detergent properties, anti-oxidants and anti-wear/corrosion to reduce engine wear to internal components
• Suits use in low temperature conditions
• Meets or exceeds API, SJ, CF-4 and CH-4 quality performance requirements
• NMMA FC-W Certified