Synthetic Gear Oils

Pennzoil® Synthetic Gear Oils are available in SAE 75W-90 viscosity grades of either API GL-4 or API GL-5 service classifications. Specially formulated with synthetic base stocks to meet the requirements that today’s cars, minivans, SUVs and light-duty trucks encounter in normal and severe driving conditions.



The synthetic base stocks used in Pennzoil® Synthetic gear lubricants provide better protection than low- and high-temperature conventional mineral-oil base stocks. They offer protection over a wide temperature range. The API GL-5 product is specially suitable for use in limited-slip differentials.

Pennzoil® Synthetic 75W-140 GL-5 Gear Oils

Pennzoil® Synthetic 75W-140 GL-5 Gear Lubricant combines a premium performance gear oil additive package with a high quality synthetic base stock. The result is a gear oil that provides excellent fluidity for safe lubrication of gears and axles during very low temperatures and also maintains a thick protective oil film during extremely hot operating conditions.



Pennzoil® Synthetic 75W-140 GL-5 is formulated with all the performance additives necessary for outstanding protection of gears and bearings. It contains extreme pressure agents that protect against shock loading and wear. Foam inhibitors protect against oil aeration, which can rupture the lubricant film and cause wear due to lack of lubrication. Special rust inhibitors are incorporated into Pennzoil® Synthetic 75W-140 GL-5 to protect against corrosion that can result from condensation. Oxidation inhibitors are included to further enhance this synthetic oil's inherent oxidation stability, resulting in a lubricant with exceptionally long service life and excellent resistance to deposit formation during high-temperature operation.

Pennzoil® Synthetic 75W-140 GL-5 meets all the requirements of API Service Classification GL-5.