Quicksilver Marine® Heavy Duty Engine Oil provides outstanding protection for 4-cycle inboard/outboard gasoline engines in marine environments.
- High-output sterndrive and inboard engines.
- Multi-viscosity 25W-40 oil formulated to eliminate thermal breakdown (no viscosity improvers necessary) under extreme temperatures and loads.
- Field-tested and proven in gas and diesel applications.
- Provides superior lubrication and protection of internal components from corrosion, wear scuffing and scoring – even in higher temperature engines.
- Provides warranty protection for Mercury MerCruiser engines.