Quicksilver 25W-40 4-Stroke Conventional Marine Oil - MW
Quicksilver 25W-40 4-Stroke Conventional Inboard & Sterndrive Marine Oil
Formulated for the demands of 4-stroke marine engines, Quicksilver 25W-40 oil provides dependable protection in both freshwater and saltwater conditions. It resists breakdown in high heat, guards against corrosion, and helps prevent wear, especially during off-season storage. Whether you’re idling at the dock or running wide open, this oil maintains stable viscosity and protects vital components from damage. It also fights deposit buildup to keep your engine cleaner over time. Designed specifically for marine use, it's a trusted pick for extending engine life and ensuring smoother starts when boating season kicks off. A favorite among marine techs for a reason.
How much oil does my engine need?
It varies model to model, check out our Engine Oil Capacity Guide for more information and capacity charts!
Benefits of Using Quicksilver 25W-40 Marine Oil
- Multi-viscosity 25W-40 oil formulated to eliminate thermal breakdown under extreme temperatures and loads without the need for viscosity improving additives.
- Field-tested and proven in gas and diesel engine trials.
- Lubricates and protects internal engine components from corrosion, wear scuffing, and scoring - even under higher temperatures.
- Warranted protection for Mercury MerCruiser engines.
Quicksilver Engine Oil Sizes Available
- 8M0078619 Quart
- 8M0078620 Gallon
Wholesale Marine’s selection of quality Mercury outboard parts includes Quicksilver 25w 40 Marine Engine Oil, which is recommended for use in all 4-stroke Marine Engines.
946 ml (32 fl oz) plastic bottle.
WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

