MAG 1® Marine 80W-90 Gear Oil

Motorcycles, Scooters, Marine and Powersports 2-Cycle, Small Engine, Motorcycle and Marine Products

Featuring MAG 1® with FMX® Technology – Friction Management for Xtreme protection™. MAG 1® provides unsurpassed protection and performance..

MAG 1® 80W-90 Marine Gear Oil is specially formulated for the high-performance needs of stern drives and outboard motors and lower units. Contains only high-quality paraffinic lubricating oils and the most technologically advanced additive system, which includes extreme pressure, anti-wear and anti-friction agents, and oxidation and corrosion inhibitors. Benefits include:

  • Superior protection against wear, especially under extreme pressure and high torque operation.
  • High resistance to thermal breakdown.
  • Helps prevent foaming, rust and corrosion.
  • Smooths and quiets operation.

Powerful Anti-Friction, Anti-Wear Chemistry 

MAG 1® provides outstanding control of friction and wear. Advanced molecules bond together to create a wear-resistant shield that works to build barriers that reduce friction and wear.

Withstands the Most Extreme Conditions

MAG 1® provide unsurpassed protection even in the harshest conditions of hot and cold climates, pressure, micropitting or oxidation.

Evolutionary Performance™

OEMs continue to evolve driveline designs and operating conditions are becoming more severe.  Today’s gear lubricants require excellent load-carrying capability and where extreme pressures and shock loading are expected. One brand has evolved right alongside today’s equipment – MAG 1®. Only the most advanced driveline gear oils meet the difficult challenges of effectively balancing performance, strength and durability.

MAG 1 Driveline Gear Oils are specially engineered and formulated to provide:


  • Excellent protection for load, shear and shock.


  • Outstanding wear and corrosion protection.


  • Thermal stability and long life for gear, bearings and seals.

Industry/OEM Specifications

API GL-5 Meets Requirements
Mack GO-J, GO-H, GO-G Meets Requirements
MT-1 Meets Requirements
SAE J2360, MIL-2105E/F Meets Requirements
Limited Slip Top Off/Service Fill Suitable for Use

Typical Properties

Brookfield Viscosity at -26°C, cP ASTM D2983 92,000
Color ASTM D1500 7
Flash Point °C ASTM D92 224
Flash Point °F ASTM D92 435
Gravity, °API ASTM D287 27.76
Pour Point °C (°F) ASTM D5950 -33°C (-27°F)
Specific Gravity @ 60°F (15.6°C) ASTM D4052 0.8885
Viscosity @ 100°C cSt ASTM D445 13.98
Viscosity @ 40°C cSt ASTM D445 130.9
Viscosity Index ASTM D2270 104

Container/Bulk Availability

6/1 Quart Product Number - 62845
Available in Bulk