MAG 1® 85W-140 GL-5 Gear Oil

Conventional Gear Oils Industrial Lubricants and Gear Oils

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

MAG 1® 85W-140 Gear Oil is specially formulated for multipurpose, extreme pressure applications, including conventional differentials, gear boxes, limited slip rear axles, manual transmissions and hypoid gears. Contains only high-quality 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 wearAdvanced 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® provides 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 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 -12°C, cP ASTM D2983 55,000
Color ASTM D1500 8
Flash Point °C ASTM D92 235
Flash Point °F ASTM D92 455
Gravity, °API ASTM D287 25.69
Pour Point °C (°F) ASTM D5950 -18°C (0°F)
Specific Gravity @ 60°F (15.6°C) ASTM D4052 0.9002
Viscosity @ 100°C cSt ASTM D445 26.39
Viscosity @ 40°C cSt ASTM D445 347.7
Viscosity Index ASTM D2270 100

Container/Bulk Availability

6/1 Quart Product Number - 00830
3/1 Gallon Product Number - 00836
2/2.5 Gallon Product Number - 00832
5 Gallon Pail Product Number - 00835
16 Gallon Keg Product Number - 00839
55 Gallon Drum Product Number - 62865
330 Gallon Tote Product Number - 66368
Available in Bulk