AMSOIL Formula 4-Stroke Marine Synthetic Oil – 10W30

PRODUCT DESCRIPTION

AMSOIL 10W-30 Formula 4-Stroke® Marine Synthetic Motor Oil (WCT) is a premium quality synthetic formulation engineered for the harsh operating conditions of marine environments. It withstands the intense mechanical action of continuous, high RPM operation to deliver superior viscosity protection. Formula 4-Stroke® Marine Synthetic Motor Oil is specially fortified with a heavy treatment of advanced additives that protects motors against wear, rust and deposits. It excels in both high horsepower applications and all-day trolling conditions.

 

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Package sizes include: 1-Quart Bottle; 1-Quart Bottles (case of 12) and 55-Gallon Drum and NOW Gallons!!

Printable Product Data Sheet for AMSOIL 10W30 WCT

Download PDFProduct Datasheet

Fights Engine Wear

AMSOIL Synthetic Marine Engine Oil’s naturally strong base oils resist viscosity loss due to mechanical shear. The oil develops a tough lubricating film that protects engine parts, even in high-heat, high-rpm conditions that breakdown other oils. Synthetic Ma-rine Engine Oil contains robust anti-wear additives that further reduce wear in metal-to-metal contact regions, guarding against compression loss for maximum power and extending the lives of marine engines.

Excellent Anti-Rust Performance

Good rust protection is not natural to motor oil; it comes only by design. AMSOIL Synthetic Marine Engine Oil is fortified with potent inhibitors that guard against damaging rust and corrosion. It protects engines during use and during inactivity or long-term storage.

  • Excellent high-stress, high-rpm endurance
  • Increased rust and corrosion protection
  • NMMA FC-W Catalyst Compatible

NMMA Certified

Synthetic Marine Engine Oil is certified by the National Marine Manufacturers Associa-tion (NMMA) for use in four-stroke outboard motors. This high-quality oil demonstrates outstanding performance and meets the requirements of the NMMA FC-W Catalyst Compatible specification, which is backward-compatible with the FC-W specification.

  • 10W-30 — FC-W (CAT)® Registration Number: FC-00833T

APPLICATIONS

Use in gasoline-fueled four-stroke inboards, outboards, inboard/outboards and personal watercraft, including those made by Honda*, Mercury*, Yamaha*, Johnson/Evinrude*, Bombardier/BRP*, Suzuki*, Nissan*, Tohatsu*, OMC*, Volvo-Penta*, Mercruiser*, Chevrolet* and Ford*.

NMMA FC-W Catalyst Compatible • API SM

Service Life

  • Four-stroke outboard motors and personal watercraft applications: Due to potential fuel dilution or water contamination, change oil at the engine or watercraft manufacturer-recommended interval.
  • Inboard and I/O applications: Change oil at two times the engine manufacturer recommended interval or one year, whichever comes first.

Compatibility

AMSOIL Synthetic Marine Engine Oil is compatible with other synthetic and conventional motor oils. Adding other oils, however, will shorten the life expectancy of AMSOIL motor oils and reduce their performance benfits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL Synthetic Marine Engine oil.

WARRANTY SECURE®

AMSOIL Synthetic Marine Engine Oil is Warranty Secure, keeping your factory warranty intact. AMSOIL Synthetic Marine Engine Oil is a high-performance replacement for vehicle manufacturer-branded products and is also backed by the AMSOIL Limited Warranty. For details, visit www.amsoil.com/warrantysecure.

Warranty Protected

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available online at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.

AMSOIL has been the recognized leader in synthetic lubrication since 1972. For more information about AMSOIL Formula 4-Stroke® Marine Synthetic Motor Oils contact us at (800) 579-0580 or 1-214-324-4998.

And keep your fuel system optimum. Not just clean but performance that will open your eyes! That is Quickshot as marine engines often run at a constant RPM. You need a real additive to remove the carbon from valves and pistons.

 

4-Stroke Marine 10W-30 Reviews

Trusted Protection

By  Mike K,  a  Verified Buyer  from  NJ  on  April 03, 2024
I have been running Amsoil marine products in my Yamaha SHO outboards since 2014. The motors run great even under the heavy strain of “run and gun” bass fishing. Shifting with the Amsoil lower gear oil is fantastic, no clunking going between forward/reverse and the contamination during yearly changes is minimal.

Outboard

By JACK,  a  Verified Buyer from Ontario Canada on  March 30, 2024
Have used Amsoil in my Honda 225 s since new in 2006..they now have 1000 hours on them.. they have never used any oil ..oil after each season looks like it has never been used

Best on the he market

By STEPHEN,  a  Verified Buyer on  February 29, 2024
This is the best marine oil out there. Tested it in my boat.

MARINE ENGINE OIL

By EDWARD,  a  Verified Buyer from  Great Lakes  on  November 22, 2023
We have been using this oil in our 1991 4.3L engine for over a decade. The engine now has a few thousand hours on it. We use nothing but Amsoil in all our rigs (trucks, sleds, boat motors)

Idle Relief

By  Tony,  a  Verified Buyer from  port colborne  on  November 10, 2023

75 HP Yamaha. This oil is great as the years have shown me as this engine idles 3-6 hours without carbon buildup and when i accelerate to top speed (weather permitting) there is no smoke or hesitation When I check the spark plugs they are in excellent condition.