Duragard® Diamond Plate® SAE 75W-140 100% Synthetic Gear Lubricant

Product Code: DUR75/140
AVAILABLE IN: 2.5 gal JUG, 5 gal PAIL, 16 gal KEG, 30 gal DRUM, 55gal DRUM, and BULK (in selected areas)







Gravity, ºAPI



Specific Gravity @60°F (15.6°C)

ASTM D4052


Viscosity @ 40°C cSt



Viscosity @ 100°C cSt



Viscosity Index

ASTM D2270


Pour Point °C (°F)

ASTM D5950

-51ºC (-60ºF)


ASTM D1500


Brookfield Viscosity at -40°C, cP

ASTM D2983


Typical test data average values only, minor variations which do not affect product performance are to be expected during normal manufacturing.

Duragard® Diamond Plate® SAE 75W-140 100% Synthetic Gear Lubricant is specially formulated with only the finest quality synthetic base oils, premium extreme pressure additives, rust and corrosion preventatives, and anti-foam agents to deliver unsurpassed protection and performance.

Duragard® Diamond Plate® SAE 75W-140 100% Synthetic Gear Lubricant is formulated with 100% synthetic base oils to provide superior gear protection over a wider range of operating and ambient temperatures than conventional gear oils. It is also formulated with premium extreme pressure additives, rust preventatives, and antifoam additives to protect hypoid gears, manual transmissions, gear boxes, passenger car and light truck conventional differentials, transmissions and steering gears.


  • * Potential energy savings: The low friction properties of Synthetic Gear Lube 75W-140 make significant fuel and energy conservation and reduced operating costs.
  • * Low temperature protection: Provides instant lubrication to components during start- up in thermally stressed arctic type conditions, preventing the scoring caused by lack of initial lubrication. In addition, the superior lubricity of this gear lubricant improves component life and reduces repairs.
  • * High temperature protection: Provides superior film strength and protection in thermally stressed, high heat conditions, compared to conventional gear oils, preventing the ridging, rippling and spalling caused by surface distress in heavily loaded gear sets.
  • * Multi-purpose: to satisfy the lubricant requirements of a wide variety of gears.
  • * High capacity: Extreme pressure lubricant additives for hypoid and heavily loaded gears.
  • * Reduced operating temperatures: Lower frictional losses and lower hydrodynamic drag result in reduced operating temperatures compared to conventional gear oils.
  • * Excellent oxidation stability: The 100% synthetic base oil used in the manufacture of this product assures outstanding stability and service life.
  • * Provides excellent moisture and corrosion protection.
  • * Minimize lubricant inventory: Compatible with other mineral and synthetic gear oils and can be used in axles and certain transmissions minimizing the number of products required in inventory.
  • * Excellent Limited Slip Performance reduces chatter and improves traction.
  • * Extended drain capability: Meets the requirements typical of axle manufacturers for extended service oil drain intervals.

Duragard® Diamond Plate® 100% Synthetic SAE 75W-140 Gear Lubricant is recommended for passenger car, bus, farm equipment, off-road construction equipment, and on highway truck hypoid, spiral bevel, and worm gear axles, but can also be used in manual trans-missions or the differential (hypoid) gear oil specifications from all domestic and foreign manufacturers such as GM, Ford and Fiat Chrysler Automobiles, LLC (FCA US, LLC). Can also be used in axles where an API GL-5 or GL-4 lubricant is recommended.

This product meets, or exceeds the requirements similar to the following manufacturers and global specifications:

API GL-5, GL-4 SAE J2360
Limited Slip AGMA 9005-E02, 250.03, 250.04, 251.02
MERITOR O-76e CEC L-45-A-99
**Consult the individual manufacturer specification requirements for recommendations and use.

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WARNING: Products may expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warngings.ca.gov.
For specific product risks check the manufacturer’s SDS Section 15: Regulatory information.