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75W/80W-90 Marine Gear Lube (AGM)

 75W/80W-90 Marine Gear Lube (AGM)
Product Code: AGM • Brand: AMSOIL

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

Package sizes include:

13-oz. Tube
13-oz. Tubes (case of 6)
1-Quart Bottle
1-Quart Bottles (case of 12)
5-Gallon Pail
16-Gallon Keg
30-Gallon Drum
55-Gallon Drum

See Pricing or Place an Order
MSDS Data Sheet

Product Details

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:

Product Application Specs

Outboard Lower Units:

• Mercury/Mariner
• Johnson/Evinrude
• Bombardier
• Honda
• Yamaha
• Suzuki
• Force/US Marine
• Nissan
• Tohatsu
• Harbormaster Marine Outboard Drives
• Sears Gamefisher and Seagull

Sterndrives:

• 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).

Click here to view the MSDS Data Sheet for AMSOIL AGM.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

Technical Data

TYPICAL TECHNICAL PROPERTIES
AMSOIL Universal Synthetic Marine Gear Lube75W/80W-90 (AGM)
 
Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 14.7
Kinematic Viscosity @ 40°C, cSt (ASTM D-445) 116.0
Viscosity Index (ASTM D-2270) 130
Flash Point °C (°F) (ASTM D-92) 216 (420.8)
Pour Point °C (°F) (ASTM D-97) -43 (-45)
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.

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 75W/80W-90 Marine Gear Lube (AGM)

Did this product meet your expectations?

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Product Name: 75W/80W-90 Marine Gear Lube (AGM)
Current Rating: 4.89 out of 5 stars
Votes & Reviews: 23 vote(s) and 28 user reviews.


A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by EZ: space

Nothing but...

Wouldn't use anything else...28ft pontoon...125hp 4stroke...

Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by RMC: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bobby: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Aido: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bill: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Michael: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dan: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by D: space

Marine lube

Great product

Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Scarab Jim: space

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)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chris: space

Great stuff

Great product

Item Reviewed: 75W/80W-90 Marine Gear Lube (AGM)
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