What kind of oil is added to the gearbox? What is the difference between gear oil and engine oil

Everyone knows that cars are divided into manual gears and automatic gears. Naturally, the gearbox is divided into manual gearboxes and automatic gearboxes. The oil added in the gearbox is dedicated gearbox oil, also called gear oil. However, there are many car owners who confuse gear oil and motor oil. If they are added incorrectly, it will cause some damage to the car. What is the difference between gear oil and motor oil?

The difference between gear oil and engine oil

Different environment

Gear oil is transmission oil, as the name suggests, it is used on the gearbox. It is a transmission lubricating oil used for the lubrication of various gears in the transmission, reducer and differential. The working environment temperature is not high; the oil is the engine Lubricating oil is used in the engine to lubricate the internal components. It has been in a high temperature and high pressure environment for a long time, and has higher oxidation resistance and stronger shear resistance.

Different roles

Both have a lubricating effect. Gear oil can prevent the occurrence of wear and sintering on the tooth surface, prolong the service life, and improve the efficiency of power transmission; the oil can play a role in cleaning, lubricating, and cooling the engine.

Engine oil is weakly alkaline, and gear oil is strongly alkaline. If gear oil is used instead of gear oil, it will easily lead to gear annealing, resulting in poor transmission, including gear system and gearbox wear resistance will be reduced; if gear oil is used instead of engine oil, the engine The repeated changes of high and low temperature can not play an effective cooling effect, nor can it meet the demand for oil viscosity. Special manual transmission fluid for manual transmission, and special automatic transmission fluid for automatic transmission. The viscosity of manual transmission oil is higher than that of automatic transmission oil, and the replacement cycle is generally shorter than that of automatic transmission oil.