
It is appropriate to add engine oil to a car between the upper and lower limits on the dipstick, and it should not be below the middle mark. During high-speed driving, the high temperature of the engine can make the oil thinner. If the oil level is too low, it will reduce the lubrication and cooling effects. Engine oil, also known as motor lubricant, is composed of base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while the additives compensate for and improve the shortcomings of the base oil's performance. The method for changing engine oil is: 1. Use a jack to lift the vehicle, locate the drain bolt, and unscrew it to drain the oil; 2. After unscrewing the oil filter, place a container beneath it; 3. Replace with a new oil filter and add new engine oil.
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