Quicksilver 5W-30 Full Synthetic Marine Engine Oil is formulated for all 4-stroke outboards, inboards, and sterndrives. Outperforming automotive oils, this specialized formula resists thermal breakdown and protects against varnish buildup and sludge. Its advanced additive package provides industry-leading defense against rust and corrosion to extend the life of your engine.
- Full synthetic SAE 5W-30 weight for all 4-stroke marine engines
- Provides outstanding wear and corrosion protection
- Resists thermal breakdown under high-heat and high-RPM conditions
- Exceeds rust protection requirements for NMMA FC-W certification
- Specialized additive package designed for the rigors of the marine environment
