Pennzoil Synthetic Gear Oil 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 Gear Oil 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 long service life and excellent resistance to deposit formation during high-temperature operation.