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

Amsoil 75W/80W-90 Marine Gear Lube AGMHigh 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

Buy Now/Pricing Information (Opens in New Window)

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

AMSOIL Product Code: AGM

Product Application
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 Specification

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

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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