Package sizes include: Single US -Quart Bottle (946 ml) Case of 12 US-Quart Bottles Single US-Gallon Jug (USA only) Case of 4 US-Gallon Jugs (USA only) 55- US Gallon Drum (208 L)
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AMSOIL 10W-40 Marine Synthetic Motor Oil is formulated for gas-powered outboard or inboard four-cycle boat engines. Also perfect for personal watercraft motors that require a 10W-40, 15W-40, 25W-40 or SAE 40.
Features and Benefits Of AMSOIL 10W-40 4-Stroke Synthetic Marine Motor Oil
Robust wear protection
Resists hot operating conditions and heavy loads
Reduces friction
Fights deposit formation
Prevents internal rust and corrosion
Supercharger compatible
Reduces oil consumption
Capable of extended oil change intervals in some engine types (see below under “Service Life…”)
A excellent alternative to Mercury 25W-40
Warranty approved carrying the NMMA “FC-W Catalyst Compatible” specification
World-Class Wear Protection For 4-Stroke Marine Motors
This 100% synthetic 10W-40 marine engine oil is loaded with design features that prevent wear during heavy loads, extended periods of full throttle and extreme heat. AMSOIL 10W-40 4-Stroke Marine will not lose its viscosity or breakdown during hard operation. This 4-stroke marine oil lowers friction, so it fights heat generation and improves efficiency. Protect your investment with AMSOIL.
Engine Warranty Protection
AMSOIL 10W-40 Marine Synthetic Motor Oil carries the NMMA (National Marine Manufacturers Association) “FC-W Catalyst Compatible” certification. AMSOIL Marine 10W-40’s NMMA Registration number is FC-00357P.
Anti-Rust and Corrosion Security
AMSOIL 10W-40 Marine Synthetic Motor Oil contains an anti-rust package that is vastly superior to that of ordinary motor oils. Engine internals and seals are protected from corrosion damage throughout the season and during long off-season storage periods.
Reduces Oil Usage
AMSOIL 10W-40 Marine Synthetic Motor Oil uses a shear-stable base oil. It will not thin out or boil off in hot temperatures or under extended periods of severe service.
Suitable Applications for AMSOIL 10W-40 Formula 4-Stroke Marine Synthetic Motor Oil (gasoline engines only)
AMSOIL 10W-40 Marine Synthetic Motor Oil can replace the following viscosities in gasoline-powered engines:
10W-40
15W-40
25W-40
SAE 40
Four-stroke outboard engines
Mercury
Honda
Yamaha
Johnson/Evinrude
Bombardier/BRP/Rotax
Suzuki
Nissan
Tohatsu
Inboard and inboard/outboard (stern drive) engines
Mercruiser
Volvo Penta
OMC
Chevrolet
Chrysler Marine
Crusader
Marine Power
Ford
Four-stroke personal watercraft engines (including supercharged models)
Polaris
Sea-Doo (BRP)
Yamaha
Honda
AMSOIL 10W-40 For Marine Synthetic Motor Oil is suitable for applications requiring the following specifications:
NMMA FC-W Catalyst Compatible
API SM
JASO MA
Service Life of AMSOIL 10W-40 Marine Synthetic Motor Oil
Four-Stroke Outboard Motors and Personal Watercraft Change oil at intervals as suggested by your owner’s manual. Change oil filter at every oil change.
Inboard, Inboard/Outboard (I/O), Stern drive engines Change oil at twice the interval as suggested by your owner’s manual or annually (whichever comes first)
Mixing AMSOIL Synthetic Marine Oil with Other Brands
AMSOIL 10W-40 Marine Synthetic Motor Oil is compatible with all other brands of conventional, semi-synthetic and synthetic boat engine oils. While you can safely mix AMSOIL Synthetic Oil with other brands, this will reduce the drain interval and performance capabilities of AMSOIL oil.
The use of any aftermarket oil additives is definitely NOT recommended.
Specifications
AMSOIL MARINE SYNTHETIC MOTOR OIL (WCF) SAE 10W-40
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
14.1
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
93.3
Viscosity Index (ASTM D-2270)
155
CCS Viscosity, cP @ (°C) (ASTM D2602)
6871 (-25)
Flash Point °C (°F) (ASTM D 92)
240 (464)
Fire Point °C (°F) (ASTM D 92)
254 (489)
Pour Point °C (°F) (ASTM D 97)
-38 (-36)
Noack Volatility, % weight loss (g/100g) (ASTM D-5800)
7.5%
Four Ball Wear Test (ASTM D 4172 @ 40 kgf, 150°C, 1800 rpm, 1 hour, Scar in mm)
