High Performance lubricant engineered to meet the demands of marine applications. AMSOIL Universal Synthetic Marine Gear Lube provides:
• Excellent Gear and Bearing Protection even when contaminated with 10% water
• Reduced Friction and Wear
• Rust and Corrosion Protection
• Long Seal Life
• Superior Foam Prevention
Product Applications
AMSOIL Universal Synthetic Marine Gear Lube is recommended for fresh and salt water applications requiring either 75W-90 or 80W-90 viscosity grade and meeting either API GL-4 or GL-5 performance standards.
Examples of AMSOIL Universal Synthetic Marine Gear Lube applications include:
• Mercruiser-Bravo
• OMC/Bombardier
• Volvo-Penta
• Yanmar
• Konrad
• Marine Drive Systems
V-Drives:
• Casale & Menkens
Bow & Tunnel Thrusters:
• Harbormaster Marine
Marine Transmissions:
• ZF Marine Transmission
Product Description
AMSOIL Universal Synthetic Marine Gear Lube is an exclusive AMSOIL formulation of synthetic base oils and high performance additives that address the specific concerns of marine applications. It is extreme pressure (EP) additive fortified for superior protection of fast accelerating, high torque/horsepower engines. It protects against shock loading from cavitation of heavily loaded engines.
AMSOIL Universal Synthetic Marine Gear Lube is water resistant. It maintains extreme pressure protection even when contaminated with as much as 10% water. It promotes longer seal life, preventing excessive water leakage. AMSOIL Universal Synthetic Marine Gear Lube protects against rust and is compatible with aluminum, copper and brass alloys.
Extreme Pressure and Foam Stability Testing
Marine gear oils operate in
environments subject to water contamination.
The chart below demonstrates the ability of
AMSOIL Universal Synthetic Marine Gear Lube
to maintain designed qualities such as extreme
pressure/anti-wear performance and resistance
to foaming, even when subjected to 10% water
contamination.
The Falex Procedure is measurement
of a gear lube's extreme pressure and anti-wear
properties. A high value in the Falex Extreme
Pressure Test relates to extra extreme pressure
protection. AMSOIL Universal Synthetic Marine
Gear Lube is not affected by water and provides
50% more extreme pressure protection for long
gear and bearing life.
The presence of foam in a lubricant
disrupts oil film and promotes wear. Water contamination
can increase the likelihood of foaming. Industry
standard testing demonstrates zero foam in both
new and water-contaminated AMSOIL Universal
Synthetic Marine Gear Lube. Other conventional
gear lubes can foam when mixed with water, as
seen in the graph.
Extreme Pressure
and Foam Stability Testing
Test
AMSOIL
Universal Synthetic Marine Gear Lube (AGM)
Conventional
Gear Lube (A)
Conventional
Gear Lube (B)
FALEX Extreme
Pressure Load Test B (LbF)
(ASTM D-3233B)
no
water
with
10% water
1500
1500
no
water
with
10% water
1100
1000
no
water
with
10% water
1000
1000
Foam Stability
(ASTM D-892)
Sequence I
Sequence II
Sequence III
no
water
with
10% water
0/0
0/0
0/0
0/0
0/0
0/0
no
water
with
10% water
0/0
0/0
0/0
0/0
0/0
0/0
no
water
with
10% water
0/0
0/0
0/0
375/290
590/0
380/305
HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).
Falex Procedure B (ASTM
D-3233) (failure load, LbF.)
1500
Foam Stability (ASTM
D-892) (20/50/20 maximum)
0/0/0
AMSOIL Universal Synthetic Marine
gear Lube is compatible with other commercially
available conventional and synthetic marine
gear lubes.
Follow manufacturers recommended
service intervals.
It is generally a good idea
to change gear lube at the end of the season
prior to storage.
How To Get Your Boat Ready for Storage
Did this product meet your expectations?
(click on a star to rate)
Product Name: 75W/80W-90 Marine Gear Lube (AGM)
Current Rating: 4.9
out of 5 stars
Total Votes: 24 vote(s)
Just bought Amsoil Gear Lube and have only praise for their Customer Support. They went the extra mile to make sure my buying experience went smoothly.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by EZ:
Nothing but...
Wouldn't use anything else...28ft pontoon...125hp 4stroke...
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by RMC:
Great for all outboards!
I been using Amsoil Synthetic Marine Gear Lube on my 2017, 115hp Yamaha outboard. This product is awesome product. So far everytime I change my gear oil it's been clean with no water, it helps in smooth shifting. Excellent product, I would recommend this product for all outboard gear oil.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Bobby:
Best gear lube.
This has protected my lower unit for the last 12 years and my internal parts still look brand new.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Aido:
I highly recommend this oil
I use this in my work boat every day from ice out to ice in on Georgian Bay. Shifts smooth and always stays clean.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Bill:
Marine Gear Lube
I use this for Mercury outboard gear cases and it has never let me down.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Michael:
Great product
Bought an 89 Boat with a Cobra out drive. Previous owner had used amsoil and gave me a quart with the purchase. Once I drained the out drive for winter and saw the oil coming out I got more. This stuff is fantastic
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Dan:
Gear Oil For my Yamahas !
I use this in my 225 Yamaha and my 9.9 kicker for my Lund 2025. It s the only oils for my Yamahas.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by D:
Marine lube
Great product
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Scarab Jim:
I buy this product continually.
I use this product in the Alpha One Gen. II outdrives on my twin engine Scarab. I`m pushing 400hp. through them and they continue to hold up because of this gear lube.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Chris:
Great stuff
Great product
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Jeff:
Great Marine gear lube
I have never had a problem when using this product. I will continue to use it exclusively!
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by None:
would not be without itbeen
I have used and oil since the seventies in cars and boat. I go app 5000 miles 0n quart. both my son's use it the best.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Jeff:
Loyal customer
Good product, quick delivery, nice website, I'm a fan of Amsoil.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Reggie:
Excellent product
After using on multiple Yamaha outboard engines more than 100 hrs between gearcase changes ; the oil looks Chrystal clear very impressive the oil should extend the life of gearcase .
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Pat:
Excellent lubricant
Never had a problem with the lower unit and it is 15 years old.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Dave:
Great Marine gear oil
Used in Mercury Race outboard gearcase's protects internals, never any metal on the magnet.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Trotline:
I trust no other oil
I use this oil in my 5.7 hemi engine. My engine runs smoother and cooler.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Jim:
First time using this product
Has preformed very well and well continue to use
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Jim:
First time using this product
Has preformed very well and well continue to use
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by CkDLND:
Works great
Works great even up north where I live in 32 degree water
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by EJ:
Iwould deffinatly buy this product
I have used the marine gear lube for many years its never let me down I highly recomend this product!!!
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Joe:
The best 2cycle oil
I use this in a 1981 75hpJohnson outboard.
Little to no smoke. Smooth running. Cylinders stay clean and does not foul plugs like other oils. Even Evinrude synthetic. Awesome product.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Mikeapple01:
The best synthetic on the market!!!
I've been using Amsoil since the 80's and I'm an ASE certified diesel mechanic with over 30 years of experience. I haven't found any other lubricant that comes close to Amsoil, I recently purchased a boat and drained all the fluids and replaced them with Amsoil marine lubricants. I know I will get years of worry free performance while using Amsoil.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by ihboy75:
Great and will buy again!
Good alternative to standard product
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by James:
Highly recommended. Works great.
This product is used in a 2013 Mercury 4 stroke outboard, 150hp. I change the oil every season with about 75 hours of use.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Larry:
Great product, I would buy it again.
I believe synthetic oils are great for any moving metal parts. No wear, No friction, saves money in years to come and makes my engines very dependable.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by Daniel:
I recommend this in top all
Better lube always I used in my Sea Ray Sundancer whit Bravo 3
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
Reviewed by carb:
lower motor unit care
easy to use and a great product.
Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
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Reviewed by Rick:
Customer service
Just bought Amsoil Gear Lube and have only praise for their Customer Support. They went the extra mile to make sure my buying experience went smoothly.