Valvoline Heavy Duty Gear Oil GL-4 is a gear lubricant created for gearboxes and transaxles of trucks, buses, and some passenger cars. This gear oil is specially engineered for heavy-duty vehicles.

Valvoline™ gear fluid for heavy-duty applications provides outstanding protection and lubrication of the gearbox of passenger cars, trucks, and buses over a wide range of climatic conditions and temperatures.

Performance grades and approvals differ among the Valvoline Heavy Duty Gear Oil products.

For more specific information on O.E.M. Approvals and Performance levels of individual HD gear lubricants, please refer to respective sections in the Product Information sheets available on the links below.

These modern GL-4 compliant Valvoline heavy-duty lubricants are formulated with premium base oils and state-of-the-art additive technologies to offer extended protection under the most demanding operating conditions.

The balanced system of modern additives coupled with quality synthetic base oils ensure there are now breakdowns and stick-slip even after extended drain periods.

In addition to breakdown resistance, the advanced properties of the Valvoline Heavy Duty gear oil technology protect the target parts against corrosion, oxidation, foaming, and deposit build-up.

Further on, the excellent viscosity-temperature properties enable smooth gear shifting under a variety of temperatures.

• Valvoline offers two types of heavy-duty GL-4 gear oil:
  • Heavy Duty Gear Oil PRO GL-4 are officially OEM approved and designed for use by true professionals to ensure high performance and protection in modern, in-warranty, gearboxes of heavy-duty equipment.
  • Conventional Heavy Duty Gear Oils, GL-4-compatible, are best recommended for use in multi-vehicle/multi-brand operations when heavy-duty gearboxes have run out of warranty and no longer require an officially approved (and more expensive) gear oil.

*Check the owner's manual and/or product information sheet before use.

Valvoline™ products should never be stored above 60°C and exposed to hot sun or freezing conditions.