With the arrival of autumn, some owners began to fall and winter seasonal maintenance of the car. Maintenance of vehicles, the replacement of lubricants is often the owner will do a project. However, many new car owners need to change the oil, how to choose the oil is not clear. Many owners do not know when to change the lubricating oil for their vehicles, often find expensive for, and in fact, a lot of times when the price of lower oil is also fully able to achieve the desired results.
The role of lubricating oil
Lubricating oil for automobile is very important, if the gasoline diesel is blood, the lubricant grease is equivalent to the lymph, everywhere to maintain a car for every pair of friction pair of harmonious operation, but also served as a scavenger and cooling function. Lubricating oil for the car has three main effects, lubrication, sealing, cleaning, cooling and shock absorption, rust.
So, since there are so many and so high requirements for the oil, what kind of lubrication oil in the car? How does the lubricating oil work?
Take the engine as an example
Baotou beiben heavy truck parts of engine is the heart of the car, the engine has a lot of friction between the movement of the metal surface, the speed of these components move fast, poor environment, working temperature of 400 DEG C to 600 DEG C. Under such harsh conditions, only the qualified lubricating oil can reduce the engine parts wear and prolong service life, then the qualified lubricating oil to meet what requirements? That is to say, the six main functions of lubricating oil is what?
1, lubricating antifriction: Baotou beiben heavy truck parts between the piston and the cylinder, between the spindle and the bearing are sliding fast, to prevent excessive wear of the parts, it is necessary to set up the oil film in two sliding surfaces. A sufficient thickness of the oil film will be relative to the surface of the sliding parts separated, so as to achieve the purpose of reducing wear and tear.
2, cooling: oil can bring the heat back to the tank and then distributed to the air to help water tank cooling engine.
3, cleaning: good oil to engine parts, carbide sludge, wear metal particles circulating back to the oil tank, the oil flow, wash the dirt on the part of working face.
4 seal: oil can form a sealing ring between the piston ring and piston, reduce the gas leakage and prevent access to external contamination.
5, anti rust anti-corrosion: lubricating oil can adsorption on the surface of parts to prevent water, air, acidic substances and harmful gas and contact parts.
6 shock absorption: when Baotou beiben heavy truck parts and engine cylinder pressure rise sharply suddenly intensified debris, piston and piston connecting rod and crankshaft bearing load, the load transfer through lubricated bearings, the impact load bearing play a buffer role.
Is not as expensive as possible
Many people believe that the more expensive the oil, the better, in fact, otherwise. We can according to their own car, the use of different oil, to know that the characteristics of the oil and the characteristics of the car all the opposite, only the best. For example, high-grade vehicles with high-grade oil is not only a waste, but also harmful to the machine. Because the car engine with a large gap, and the high-grade oil viscosity is relatively low, in this case, the oil is easily poured into the combustion chamber, the machine will malfunction, blue smoke from the burning oil.