
AMSOIL 10W-40 Synthetic Marine Engine Oil
Product code : WCFQT-EA
AMSOIL 10W-40 Synthetic Marine Engine Oil
Fights Engine Wear
AMSOIL Synthetic Marine Engine Oil’s naturally strong base oils resist viscosity loss
due to mechanical shear. It develops a tough lubricating film that protects engine
parts, even in high-heat, high-rpm conditions that breakdown other oils. Synthetic Marine
Engine Oil contains robust anti-wear additives that further reduce wear in metalto-metal contact regions, guarding against compression loss for maximum power and
engine life.
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
AMSOIL Synthetic Marine Engine Oil is certified by the National Marine Manufacturers
Association (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-40 ‐FC-W (CAT)® Registration Number: FC-00850T
APPLICATIONS
Use in gasoline-fueled four-stroke inboards, outboards,
inboard/outboards, supercharged watercraft engines 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, JASO MA
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 benefits. 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 AMSOIL.com/warranty/.
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 AMSOIL.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.
* 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. All products advertised here are developed by AMSOIL for use in the applications shown.
AMSOIL 10W-40 Synthetic Marine Engine Oil
SDS
Download the SDS
Data Bulletins
Download the Data Bulletins
WARRANTY
Download the WARRANTY
AMSOIL 10W-40 Synthetic Marine Engine Oil
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Quality ProductBy  ERIC,  a  Verified Buyer  from  St Clair, Michigan   on  December 10, 2020Quality product, have used it for years and no issues.Bottom LineYes, I would recommend this to a friend.
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The Best REAL Marine OIlI have trusted this oil in my Volvo Penta 5.0 V8 for many years, and in my Mercruiser 5.7 V8 before that. These engines always started and ran perfectly. Great protection.Bottom LineYes, I would recommend this to a friend.
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Bottom LineYes, I would recommend this to a friend.
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By  GEORGE,  a  Verified Buyer  from  Spokane, Wa.  on  November 13, 2020I ran it in my 4.3 mercrusier and it worked great, I am going to run it next year alsoBottom LineYes, I would recommend this to a friend.
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Bottom LineYes, I would recommend this to a friend.
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Good for smaller trolling motors without oil filtersBottom LineYes, I would recommend this to a friend.
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Bottom LineYes, I would recommend this to a friend.
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GreBottom LineYes, I would recommend this to a friend.
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Best there isBy  Anonymous,  a  Verified Buyer  from  Pasadena California   on  September 18, 2020Used in a high revving supercharged Yamaha jet boat that is mostly used in the ocean and I Change oil every 50 hours and engine does not consume a drop of it.Bottom LineYes, I would recommend this to a friend.
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Great for my Yamaha Jet BoatBy  Smitty78,  a  Verified Buyer  from  Hartford, CT   on  September 16, 2020I run this oil exclusively in my 425 HP Yamaha SX-195 Race Boat. It delivers the performance that I need in a high boost application!!Bottom LineYes, I would recommend this to a friend.