What kind of oil should I change for old car maintenance?

0W40 engine oil is preferred. If the viscosity of the original oil is relatively low, you can choose high viscosity oil. Old cars burn a lot of oil, so using 0W40 engine oil is definitely the first choice. On the one hand, choosing high viscosity engine oil can reduce the loss of engine oil.

Another is the quality of engine oil. It is best to use PAO, imported GT engine oil, and PAO engine oil does not produce carbon deposit. Generally, the second and third base oils in synthetic engine oil are of little use for burning engine oil, so it is better to repair the engine.

Brief introduction of engine oil:

Engine oil, that is, engine lubricating oil, English name: engine oil. The density is about 0.9 1× 10(kg/m), which can play the roles of lubrication and wear reduction, auxiliary cooling, sealing and leakage prevention, rust prevention and corrosion prevention, and shock absorption and buffering.

Known as the "blood" of the car. Engine oil consists of base oil and additives. Base oil is the main component of lubricating oil, which determines its basic properties. Additives can make up for and improve the shortcomings of base oil properties and give some new properties, which is an important part of lubricating oil.