The car maintenance industry in country is growing rapidly. Drivers often contact these operators and naturally learn some maintenance knowledge from them. "Five oils and three waters" are maintenance concepts that operators most often use to educate car owners. It is very important. .
"Five oils" refers to engine oil, brake oil, automatic transmission oil (automatic transmission), transmission oil (manual transmission) and differential oil; "three water" refers to cooling water, wiper water and battery water, generally. Car owners are more familiar with checking and changing engine oil, but other items are just as important and should not be taken lightly.
According to world-famous car maintenance center, automatic transmission oil is responsible for transmitting power and lubricating automatic transmission. The oil quantity should be checked every 5,000 kilometers and replaced every 20,000 kilometers or a year. To replace it is best to use an oil substitute. Let old oil be completely drained, do not use partial leakage and addition, and take out and clean magnet and strainer at bottom of gearbox, which are used to absorb metal chips and pollution, and then inject new oil. When choosing a gear oil, you should be guided by characteristics suggested in vehicle's owner's manual and use products with high shear resistance and stable quality.
In addition to regularly changing oil in automatic transmission, Castrol also recommends checking it yourself at any time. First, engine must reach operating temperature, apply brake, shift each gear to P, then open engine cover and take out center of engine to check if oil volume reaches upper limit of set scale. , which means normal; then look at color, it's bright red. Red means it's clean, and dark red means it's too dirty; at end of smell, if there is a burning smell, this means that clutch disc has improper friction and sticking. Thus, by an abnormal phenomenon while driving, it can be judged that it needs to be replaced or added. As for mileage of inspection and replacement of car's manual transmission oil, it is same as that of automatic transmission oil.
Brake fluid is changed every 20,000 kilometers or a year. The higher DOT level, better quality. The most common are DOT4 and DOT5. Currently, highest level in world is last one. Car owners can rely on braking system of their favorite vehicle. Choose according to design and driving style, and characteristics of oil should take into account effectiveness of anti-vapor blocking.
Finally, cooling water is used to raise boiling point of water and lower freezing point to maintain cooling effect, prevent rust and scale formation, protect water pump and prevent thermostat valve sticking, and provide lubrication and protection. waterway. It needs to be replaced every 20,000 kilometers or a year, and it needs to be checked and added frequently on weekdays. The checking method is to check additional water tank when it reaches operating temperature. It is normal if water level reaches the upper limit. labels.