What to Pay Attention to When Changing Engine Oil for Cars
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When changing engine oil for cars, the following points should be noted: 1. Drain the oil when it is hot for better fluidity; 2. Fill to the level indicated on the dipstick; 3. Choose the oil type based on driving conditions, driving frequency, and the requirements of the vehicle's engine. The types of engine oil vary depending on different factors: 1. Depending on the engine, it can be divided into diesel engine oil and gasoline engine oil; 2. Depending on quality and performance, it can be divided into full synthetic oil, semi-synthetic oil, and mineral oil. The functions of changing engine oil include: 1. Lubricating the piston, piston rings, and cylinder; 2. Lubricating the intake valve stem; 3. Reducing engine friction and high temperatures; 4. Cleaning carbon deposits, sludge, and worn metal particles.