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Keller-Heartt has Truegard Propylene Glycol Heat Transfer Fluids in both Inhibited and Food Grade! Order Today!
Propylene Glycol Available. Order Today!

Frequently asked questions

Find answers to common questions about our products and services
  • 80W/140 is an SAE gear lubricant viscosity grade where '80W' describes its low-temperature flow characteristics and '140' describes its high-temperature viscosity. This heavy-weight grade is engineered for use in heavy-duty manual transmissions, differentials, and axles that operate under high loads and require a thicker lubricating film for adequate protection.

  • HD stands for Heavy Duty, indicating the oil is formulated to withstand the elevated pressures, loads, and stresses found in demanding drivetrain applications - making it suitable for commercial, fleet, or industrial equipment rather than light-duty passenger vehicle use.

  • 80W/140 is a heavier, higher-viscosity gear oil than 75W-90 or 80W-90, providing a thicker lubricating film that is better suited for high-load, high-torque applications such as heavy truck rear axles and large differentials. Always refer to your equipment manufacturer's specification to confirm the correct SAE viscosity grade required.

  • A 55-gallon drum should be stored upright or on its side in a cool, dry, and well-ventilated area away from moisture and contaminants. Dispensing requires compatible pumping equipment; the drum bung should remain sealed until use to prevent contamination.

  • A 55-gallon drum is a bulk format best suited for high-volume users such as commercial fleets, farms, heavy equipment shops, or industrial facilities that perform frequent fluid changes. If your consumption is lower, a smaller package size may reduce waste and simplify handling; check whether this product is offered in pails or quarts as well.