Quicksilver Full Synthetic 10W-30 Marine Engine Oil is formulated to provide the industry’s highest level of viscosity retention for maximum engine protection. Its specialized additive package neutralizes harmful combustion byproducts and provides leading defense against rust during periods of non-use. This oil exceeds NMMA FC-W standards for non-catalyzed marine engines.
- Full synthetic formula for all 4-stroke outboards, inboards, and sterndrives
- Highest viscosity retention in the industry for a 10W-30 oil
- Elevated ZDDP levels prevent engine wear and corrosion
- Industry-leading protection against rust and thermal breakdown
- Upgrade safe; compatible with mineral and synthetic-blend oils
