Motor Oil Info

Motor oil has to combat byproduct chemicals from gasoline or diesel ignition and should contain additives such as detergents and dispersants. Since an internal combustion engine has an oil pump and lubricates the bearings with a hydrodynamic film, the need for extreme pressure additives such as those used in gear lube does not exist in engines.

Engine oils and gear lubes both have anti-wear additives, they both must lubricate, cool and protect components, but gear lubes are placed under extreme amounts of pressure, creating a propensity for boundary lubrication. For example, differentials in cars and trucks have a ring and pinion hypoid gear set. A hypoid gear set can experience boundary lubrication, pressures and sliding action that can wipe most of the lubricant off the gears. To combat this extreme environment , extreme pressure additives are incorporated into the oil . AMSOIL uses an extra treat of extreme pressure additives in its gear lubes in order to reduce wear and extend the gear and bearing life.