U-Oil.net
Marine Synthetics for what moves you!


Looking to upgrade to a synthetic for your Merc Stern Drive or the power plant that sits in front of it? If your engine is old enough to have a flat tappet cam you should strongly consider NOT using oil from your local parts shelf. Make sure you are running an oil that will support the cam to lifter interface. Modern "car" oils do not contain the proper additives to keep your cam alive.


Check out the oils listed below for your performance

  • Jet Drive
  • Stern Drive
  • V-Drive
  • Inboard


Click the tabs below. Complete catalog available here.


RD-30 10W-30
RD-50 10W-50
RD-60 60W
WCT 10W-30
WCM 25W-40 Synthetic Blend Marine
WCF 10W-40
AGM Gear Case
Two Stroke Outboard Oil - HPM
100:1 Two Stroke Outboard Oil
RD-30 10W-30
AMSOIL RD-30

Amsoil RD-30

10W-30 Race Oil

Provides superior performance and maximum protection in high-performance and racing applications. DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.  


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RD-50 10W-50
AMSOIL RD-50

AMSOIL RD-50

15W-50 Race Oil

Provides superior performance and maximum protection in high-performance and racing applications. DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.



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RD-60 60W
AMSOIL RD-60

AMSOIL RD-60

60W Race oil

Provides superior performance and maximum protection in high-performance and racing applications. DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications. 



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WCT 10W-30
AMSOIL WCT

AMSOIL WCT

Synthetic 10W-30 Marine Oil


For use in 4-stroke gasoline fueled engines in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W approved and "warranty certified". For use in 4-stroke outboard and marine inboard engines. Also excellent for personal watercraft. 


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WCF 10W-40

AMSOIL WCF

Marine 10W-40


For use in 4-stroke gasoline fueled engines in marine applications. Offers unsurpassed wear protection, viscosity stability, low volatility and excellent rust protection. NMMA FC-W approved and "warranty certified". For use in 4-stroke outboard and marine inboard engines. Also excellent for personal watercraft. 


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AGM Gear Case
AMSOIL AGM

AMSOIL AGM

75W-90 Synthetic Gear / Lower Unit Oil


True marine gear performance. Provides superior protection from shock loading. Resists foam and retains extreme-pressure qualities even when subjected to 10% water contamination. For use in outboard lower units, sterndrives, V-drives, bow and tunnel thrusters and marine transmissions Excellent for use in ATVs. Does contain friction modifiers. Now available in Easy Pack bag as pictured! Less mess, more in the lower unit!


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Two Stroke Outboard Oil - HPM

 
 

Excellent for Evinrude® E-TEC™ factory-lean setting (replaces Evinrude XD100™ 2-Cycle Oil). Helps prevent deposits, protects against wear, has low smoke, protects against rust and has low aquatic toxicity. Superior performance as an injection oil or at 50:1 pre-mix.


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100:1 Two Stroke Outboard Oil
ATO

Designed for pre-mix applications as lean as 100:1 ratios or richer. Improves throttle response and lowers or eliminates smoke. Minimizes deposit formation and lowers emissions. Performance emphasis on the cooler operations of water-cooled motors.


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WCM 25W-40 Synthetic Blend Marine

Engine performance and reliability are key to a successful day fishing or boating. High-rpm operation and constant exposure to water, however, invite engine wear and formation of rust and corrosion, reducing engine performance and life. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil guards against wear while delivering excellent protection against rust and corrosion. It is Warranty Secure® and will not void your marine engine’s warranty.


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