Gear Oil Filtration Machine

Gear oil is a lubricant made specifically for transmissions, transfer cases and differentials in automobiles, Trucks and other machinery. It is of a high viscosity and usually contains organosulfur compounds. Some modern automatic transaxles (integrated transmission and differential) do not use a heavy oil at all but lubricate with the lower viscosity hydraulic fluid which is available at pressure within the automatic transmission. Gear oils account for about 20% of the lubricant market.

Most lubricants for manual gear boxes and differentials contain extreme pressure (EP) additives and anti-wear additives to cope with the sliding action of hypoid bevel gears. Typical additives include dithiocarbonate derivatives and sulfur-treated organic compounds (“sulfurized hydrocarbons”).