What are the precautions for changing engine oil?
2 Answers
Precautions for changing engine oil: 1. Pay attention to the model of the engine oil; 2. Pay attention to the amount of oil added. Engine oil, also known as engine lubricant, can lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. Engine oil is composed of base oil and additives. Base oil is the main component of lubricating oil, determining its basic properties, while additives can compensate for and improve the shortcomings of the base oil, giving it certain new properties. Characteristics of engine oil: 1. Lubricity; 2. Low-temperature operability; 3. Viscosity-temperature properties; 4. Oxidation resistance; 5. Anti-foaming properties.
I think the most important thing to pay attention to when changing oil yourself is the safety operation procedure. Last time I changed the oil, I found it particularly dangerous to crawl under the car before it was properly parked. It's best to find a level ground, engage the handbrake, and block the wheels with bricks front and back. When draining the old oil, the drain plug should be loosened slowly, as hot oil can suddenly spurt out and easily splash into your eyes—I learned this the hard way. The oil pan drain plug washer should be replaced every time, otherwise it can easily leak. Before installing the new oil filter, apply a layer of oil on the rubber gasket to prevent deformation when tightening. When adding new oil, don't exceed the upper mark on the dipstick—overfilling can actually reduce engine power and increase fuel consumption. Finally, remember to start the engine and let it run for two minutes before checking the dipstick and topping up if necessary.
