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AMSOIL 10W-40 100% Synthetic Marine Engine Oil

Product code : WCFQT-EA

  • 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

AMSOIL 10W-40 100% 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.

AMSOIL 10W-40 100% Synthetic Marine Engine Oil

Data Bulletin

Warranty

SDS



AMSOIL 10W-40 100% Synthetic Marine Engine Oil

  • 5 star rating
    Smooth running
    By  DALE,  a  Verified Buyer  from  Picton, Ontario   on  November 29, 2024
    My Yamaha F115 outboard runs smoothly and efficiently. Been using this oil for the last 5 years, highly recommended!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Engine
    By  ANTHONY,  a  Verified Buyer  from  Port Colborne Ontario Canada  on  November 13, 2024
    I've been using this oil in my 75hp Yamaha for 10 Plus years I'm a charter boat for fishing which means I depend on my motor running at peak performance This motor idles for 2-6 hours per trip. I inspect my spark plugs regularly and have never had an issue with fouling plugs. when i go to full throttle she never lets me down. I change its oil once a year and like what I see.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Great oil -Look up guide sucks
    By  TOM,  a  Verified Buyer  from  WI  on  November 11, 2024
    Great oil as always. However, got a new motor this year and the look up guide sucks. Hasn’t been changed in years. Just refer to your owners manual for correct application.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I trust AMSOIL for everything!
    By  Clyde,  a  Verified Buyer  from  MO  on  May 02, 2024
    Good stuff! Got it in my cars, trucks (diesel & gas), tractors, mowers, saws, skid steer, backhoe, boat, bikes, & bedrooms (squeaky hinges/springs ya know). AMSOIL hasn't let me down in 25 years. Proud, proud, proud!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Suzuki 150hp & Suzuki 9.9hp
    By  Too Tall,  a  Verified Buyer  from  Port Angeles, WA.  on  April 24, 2024
    Been using Amsoil Marine Oil since motors were new, 2009. Have had zero engine problems. Also use lower unit oil, filters and grease. Quality products
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent !
    By  Richard,  a  Verified Buyer  from  CO  on  April 22, 2024
    Two Thumbs Way High !
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    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.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    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
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    25 HP Yamaha
    By  PAUL,  a  Verified Buyer  from  Lexington, KY  on  March 24, 2024
    Can’t get better protection.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    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.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?