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AMSOIL 10W-40 100% Synthetic Marine Engine Oil
Product code : WCFQT-EA
AMSOIL 10W-40 100% Synthetic Marine Engine Oil
Product code : WCFQT-EA
Current price:
$17.29
Retail Price
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Estimated delivery by Mon, Jun 8
to Columbus - 43215.
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Added to Your Shopping Cart
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- 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
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We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
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We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
About this item
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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.
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star rating
Tracker 2019 150 and 10 horse kicker.By JEREMY, a Verified Buyer from Michigan on May 31, 2026Bought my boat new in 2019 it's had AMS its whole life no metal in my oil at all every year in both 150 and 10 horse kicker. I do change the oil more often than needed I do it every year no matter how much I use my boat.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Saves your motors lifeBy PRESTON, a Verified Buyer from Louisiana on April 24, 2026Works greatBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
100% Synthetic Oil Protection for BoatsBy GARY, a Verified Buyer from South Carolina on March 30, 2026Last year I changed over to Amsoil Marine Engine Oil and Marine Gear Lube for the best protection in my boats. I've been running Amsoil products in all my vehicles, lawn and garden equipment, & generators, for the past several years. When I saw they also had marine oils, it was an easy decision to make the switch.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
Yamaha Sho is HappyBy HH, a Verified Buyer from south on March 11, 2026Yamaha sho likes the synthetic oil from Amsoil.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
YesBy ROD, a Verified Buyer from WA on March 10, 2026Love it. Keep goingBottom LineYes, I would recommend this to a friend.Was this review helpful?
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star rating
bestBy ANTHONY, a Verified Buyer from Port Colborne Ontario Canada on November 28, 2025true to its claimBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Lubrication and water protectionBy K LAMAR, a Verified Buyer from Chattanooga on November 25, 2025Provides peace of mind with superior lubrication and water intrusion protection.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great productBy JUSTIN, a Verified Buyer on November 19, 2025This is a premium oil that I trust to deliver longevity to my outboard.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
No WorriesBy DOUG, a Verified Buyer from Northern Wisconsin on November 08, 2025Been using Amsoil 2stroke and 4stroke engine oil and gear lube for25 years. No Worries!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Quality ProductBy ANDREW H., a Verified Buyer from Bracebridge on October 22, 2025I have been using Amsoil for many years in everything I own that has a motor. Never had an engine failure and some of thos motors were / are high performance applications.Was this review helpful?
-
star rating
Data Bulletins-
- 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
-
We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
-
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
-
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.
-
-
-
star rating
Tracker 2019 150 and 10 horse kicker.By JEREMY, a Verified Buyer from Michigan on May 31, 2026Bought my boat new in 2019 it's had AMS its whole life no metal in my oil at all every year in both 150 and 10 horse kicker. I do change the oil more often than needed I do it every year no matter how much I use my boat.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Saves your motors lifeBy PRESTON, a Verified Buyer from Louisiana on April 24, 2026Works greatBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
100% Synthetic Oil Protection for BoatsBy GARY, a Verified Buyer from South Carolina on March 30, 2026Last year I changed over to Amsoil Marine Engine Oil and Marine Gear Lube for the best protection in my boats. I've been running Amsoil products in all my vehicles, lawn and garden equipment, & generators, for the past several years. When I saw they also had marine oils, it was an easy decision to make the switch.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Yamaha Sho is HappyBy HH, a Verified Buyer from south on March 11, 2026Yamaha sho likes the synthetic oil from Amsoil.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
YesBy ROD, a Verified Buyer from WA on March 10, 2026Love it. Keep goingBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
bestBy ANTHONY, a Verified Buyer from Port Colborne Ontario Canada on November 28, 2025true to its claimBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Lubrication and water protectionBy K LAMAR, a Verified Buyer from Chattanooga on November 25, 2025Provides peace of mind with superior lubrication and water intrusion protection.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great productBy JUSTIN, a Verified Buyer on November 19, 2025This is a premium oil that I trust to deliver longevity to my outboard.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
No WorriesBy DOUG, a Verified Buyer from Northern Wisconsin on November 08, 2025Been using Amsoil 2stroke and 4stroke engine oil and gear lube for25 years. No Worries!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Quality ProductBy ANDREW H., a Verified Buyer from Bracebridge on October 22, 2025I have been using Amsoil for many years in everything I own that has a motor. Never had an engine failure and some of thos motors were / are high performance applications.Was this review helpful?
-
star rating
