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AMSOIL 75W-90 100% Synthetic Marine Gear Lube
Product code : AGMQTC-EA
- Excellent gear and bearing protection, even when contaminated with 15% water1
- Reduced friction and wear
- Protection against rust and corrosion
- Long seal life
- Superior foam prevention
1Based upon AMSOIL testing of AMSOIL 75W-90 Synthetic Marine Gear Lube in ASTM 3233 and ASTM D892.
AMSOIL 75W-90 100% Synthetic Marine Gear Lube
Delivers exceptional wear protection, even when contaminated with up to 15 percent water.1 Extreme-pressure formulation controls damage from shock-loading caused by propeller cavitation. Excellent for fast-accelerating, high-horsepower boats. Protects against rust and corrosion. Keeps seals soft to minimize water leakage. Compatible with other synthetic and conventional oils. Use in fresh- and saltwater applications that require 75W-90 or 80W-90 gear lube and any of the specifications listed below, including lower units made by Mercury/ Mariner,* Johnson/Evinrude,* Bombardier,* Honda,* Yamaha,* Suzuki,* Force/US Marine,* Nissan,* Tohatsu* and Harbormaster;* sterndrives made by Mercruiser-Bravo,* OMC/Bombardier, Volvo-Penta,* Yanmar,* Konrad* and Marine Drive Systems;* V-drives made by Casale & Menkins;* bow thrusters made by Harbormaster Marine;* and transmissions made by ZF Marine Transmission.*
- API GL-4, GL-5
See the product data sheet for full details.
PROTECTS AGAINST WEAR
- Fortified with extreme-pressure (EP) additives for superior protection of fast-accelerating, high-torque/horsepower engines.
- Protects against shock loading from cavitation of heavily loaded engines.
- Delivers advanced outboard protection against power loss and gear wear, even with up to 15 percent water contamination.1
RESISTS RUST & FOAM
- Designed to prevent rust and is compatible with aluminum, copper and brass alloys.
- Resists foam despite water contamination to ensure a strong fluid film and excellent wear protection.
- Promotes long seal life to help prevent water intrusion.
EASY-PACK EASES MAINTENANCE
- Award-winning AMSOIL easy-pack reduces mess and hassle when changing lower-unit gear oil.
- Eliminates the need to buy and store a messy gear-lube pump.
See the product data sheet for full details.
1 Based upon AMSOIL testing of AMSOIL 75W-90 Synthetic Marine Gear Lube in ASTM 3233 and ASTM D892.
*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 75W-90 100% Synthetic Marine Gear Lube
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Data BulletinsWarranty
AMSOIL 75W-90 100% Synthetic Marine Gear Lube
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Good stuffBy BILL, a Verified Buyer on June 12, 2025Great blend, easy to use container. Awesome.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Marine gear lubBy RON, a Verified Buyer from Nova Scotia on June 04, 2025Never used AMSOIL products before, but found that the gear oil for my Volvo Penta outdrive required 75w90 without limited slip additives and AMSOIL sold it. The price was a bit better than the VolvoPenta packaged gear oil, so I thought I’d try it. AMSOIL claims that it still functions with up to 15% water in it, and where this outdrive is new to me, I’m not entirely sure it’s water tight. We’ll see at the end of the year when I drain it.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Gear lubeBy BRIAN, a Verified Buyer on May 18, 2025Switching both of my Suzuki outboards over to Amsoil products, as I use their products in everything else. Great products, with a great pricepoint program, and very fast shipment for me here in WI.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Smooth shifting!By RICH, a Verified Buyer on April 20, 2025This is my first year trying the full synthetic gear oil, and the first thing noticed was how much smoother my Bravo One XRs are shifting. I have already recommended this product to my boating family.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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ProtectsBy DREW, a Verified Buyer on January 27, 2025Been running this in the lower unit of my Suzuki DF50 since I took the break in oil out. It gets ran had either wide open up the Missouri River, long idle/ no wake zones, and sometimes run in the mud while duck hunting. So having an oil that protects the lower unit is crucial since my sees a lot of abuse being a hunting and river boat. My lower unit shifts better than when it was new and is quiet and vibration free.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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no other can compareBy MICHAEL, a Verified Buyer from Pensacola Fl on January 03, 2025have been using this product for years and I'm very happy with this gear lube. It says what it supposed to do easy shifting and no ware on the parts even if water does penetrate the system. when I drain the lower unit there is no metal filings on the drain plug that tells me it is doing its job.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Great LubeBy DALE, a Verified Buyer from Picton, Ontario on November 29, 2024Use this in my Yamaha F115, about 100 hours per season. When replacing the marine gear lube in the fall, it comes out yellow as I had just put it in !Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Gear LubeBy ANTHONY, a Verified Buyer from Port Colborne Ontario Canada on November 13, 2024I use this product in my 75hp Yamaha bottom end Keeps the bearings and gears in great shape and shifting smoothly I have recommended it to all my boating friendsBottom LineYes, I would recommend this to a friend.Was this review helpful?
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ExcellentBy STEVEN, a Verified Buyer from Quebec on November 01, 2024The best that any out drive and lower drive any marine engine could get, would be good to have 1 liter bottles instead of 1 quart( as often you need 2 litres, and i have to buy 3 instead of 2 to top off)Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Best gear oilBy BRIAN, a Verified Buyer on October 29, 2024I have used in my outboard leg for many years with 0 problems.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
