Skip to content Skip to navigation menu

25W-40 4 Stroke Marine Stern Drive Engine Oil, 55 Gal.


Truck Freight
Model # 10496578 | Mfg # 18-9400-7
In stock online.
Has been formulated to provide excellent lubrication and corrosion protection. Stern drive and inboard engines operate under high load and running stresses. This product is developed for the marine environment and will out perform standard 4-cycle automotive engine oils. Sierra's 25W-40 oil offers excellent detergency, anti-oxidants, antiwear, and corrosion protection. The benefits to your engine are reduced wear to the internal components, protection of internal parts from corrosion, cleaner pistons, and prevention of ring sticking. Excellent low temperature operating properties. Meets or exceeds quality performance API SJ, CF-4, CH-4. Recommended for use in Mercruiser, OMC and Volvo Penta.Guaranteed and backed by our famous Sierra comprehensive warranty. (Will not void your engine manufacturer's warranty)

25W-40 4 Stroke Marine Stern Drive Engine Oil, 55 Gal.

Type Conventional
Capacity 55 Gallons
Compatibility Sterndrives
Service Category FC-W
Viscosity 25W40

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.