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AMSOIL 10W-30 Synthetic Marine Engine Oil

Product code : WCTQT-EA

4.9 star rating
Read 110 reviews
Read 110 reviews

  • Excellent high-stress, high-rpm endurance
  • Increased rust and corrosion protection
  • NMMA FC-W Catalyst Compatible
  • Perfect for hardcore anglers and boaters who demand the best protection for their marine engines
Warning - Click here for Proposition 65 information for this product
Product Overview

AMSOIL 10W-30 Synthetic Marine Engine Oil



Specially engineered for marine applications. Durable formulation protects in severe conditions, from all-day trolling to high-rpm operation. Heavily fortified with advanced additives designed to prevent deposits, rust and corrosion. 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.*

See the Product Data Bulletin for full details.

FIGHTS ENGINE WEAR

  • Naturally strong base oils resist viscosity loss due to mechanical shear.
  • Develops a tough lubricating film that protects engine parts, even in high-heat, high-rpm conditions that break down other oils.
  • Contains robust anti-wear additives that further reduce wear in metal-to-metal contact regions, guarding against compression loss for maximum power and engine life.

EXCELLENT ANTI-RUST PERFORMANCE

  • Fortified with potent inhibitors that guard against damaging rust and corrosion.
  • Protects engines during use and during inactivity or long-term storage.

NMMA CERTIFIED

  • Certified by the National Marine Manufacturers Association (NMMA) for use in four-stroke outboard motors.
  • Demonstrates outstanding performance and meets the requirements of the NMMA FC-W Catalyst Compatible specification, which is backward-compatible with the FC-W specification.

See the Product Data Bulletin for full details.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

Technical Specification

AMSOIL 10W-30 Synthetic Marine Engine Oil

Data Bulletin

Warranty

SDS



Product Reviews

AMSOIL 10W-30 Synthetic Marine Engine Oil

4.9 star rating
Based on 110 reviews
Based on 110 reviews
See all customer reviews
  • 5 star rating
    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)
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Only run the best
    By  MIKE,  a  Verified Buyer  from  Midwest  on  November 01, 2023
    Have been using Amzoil for 17 year's have never had an oil related problem. Put marine oil in 300 hp mercury and 15 hp kicker the kicker was noticeable smoother running.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Marine oil
    By  GEORGE,  a  Verified Buyer  on  October 24, 2023
    Great product. Used in a 2004 Seaswirl. No problems.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Yamaha 225 oil for sure
    By  DANIEL,  a  Verified Buyer  from  Michigan   on  October 20, 2023
    This is the only oil for my Yamaha big motor and my kicker. Amsoil is the way for me
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Marine Grade Oil
    By  GIOVANNI,  a  Verified Buyer  from  Hanna  on  October 15, 2023
    Put this oil in my 2003 Suzuki 4 stroke. Got about 80 hours on the oil. Amsoil superior modifiers work as engineered. Allows the filter to remove all impurities. Oil looks like new. I just change oil filter after the first run of the season
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Unexpected Benefits
    By  Jeff,  a  Verified Buyer  from  Wisconsin  on  October 03, 2023
    We have a 23 ft Chapparal with a Chevy 454 and a Mercruiser Bravo3 outdrive. The 454 has 750 hours and runs as smooth as silk. The Amsoil 10W40 Marine is very special. The throttle response is incredible and the consumption of fuel is minimal. Considering this is a Chevy / Mercruiser454 I expected this boat to be a gas guzzler. The Mercruiser 7.4 liter has multi port fuel injection and is far more efficient than the Chevy 350 Mercruiser. Using Amsoil synthetic has made a tremendous difference. We cruise our boat on Lake Geneva in southern Wisconsin, and can circle the 25 to 26 miles around the lake using a little more than 5 gallons of fuel. The previous owner was somewhat cheap and used 10W40 conventional oil. He got about 3 mpg and refused to believe the difference I got using Amsoil. My fuel savings over the course of the Summer paid for the 6 qts of of Amsoil 3 times over using conventional oil. This is a clear cut example of cost versus price. I can actually say that the Amsoil literally paid for itself over lower priced conventional oil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great
    By  TIM,  a  Verified Buyer  from  Alabama  on  September 13, 2023
    Just did the 100 hr service on my new Yamaha VF90. I read and researched for weeks before deciding what brand oil to go with. I went 10w-40 because sometimes I’m running hard in +100° temps. From all the research I did on this oil, I have no doubt that it will fulfill my expectations.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent product for you Seadoo.
    By  AUBREY,  a  Verified Buyer  from  Canada  on  July 31, 2023
    I have been using Amsoil in my Harley for year. I bought a seadoo this year and it was a no brainer for me to check the Amsoil site to see if they have an oil for it. They did not disappoint. Excellent product and highly recommend it. A friend of mine just bought a new seadoo. He called me up and ask about the first oil change. I told him to get the Amsoil. We did our oil changes together and love the product. Hands down the best decision you can make for your seadoo
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  MARC,  a  Verified Buyer  from  Ontario  on  July 16, 2023
    Great oil very happy very fast shipping from order to my door in 2 days or less
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Pefrect
    By  JEFF,  a  Verified Buyer  from  Florida Keys  on  July 09, 2023
    For the same price as conventional Yamalube, I'm running what has always been considered the gold standard of oils. My boat feels quicker, it *is* more fuel efficient, and after 50 hours it still looks brand new. I'm sold.
    Bottom Line
    Yes, I would recommend this to a friend.
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