Should the car be warmed up before changing the oil?
2 Answers
It is necessary to warm up the car before changing the oil. Generally, the car should be warmed up for about 5 minutes before changing the oil, as this allows the old oil to drain more thoroughly. Benefits of warming up the car before changing the oil: 1. Oil is a liquid with a certain viscosity. If the temperature is relatively low, the viscosity is higher, making it difficult for the oil to flow out after removing the oil pan drain plug; 2. There is some sludge inside the engine, which will soften after warming up, allowing the sludge to be discharged along with the oil; 3. Removing the oil filter will be easier after warming up. When changing the oil, the oil filter should also be replaced. There is a lot of oil and sludge around the oil filter, making it difficult to remove when the engine is cold.
Warming up the car before an oil change is indeed a good practice. As someone who frequently performs car maintenance, I find that heating the engine makes the oil thinner when its temperature rises, allowing it to drain out faster and more thoroughly. The dirt inside the engine is also more easily carried away, whereas when the engine is cold, the oil is too thick and leaves more residue, making it harder to clean properly. Before each maintenance session, I drive the car for a few minutes to warm up the engine, then shut it off and let it cool slightly when the temperature reaches around 70-80 degrees Celsius before starting the oil change. This method is both efficient and safe, avoiding burns. Consistently following this practice benefits the car and extends its lifespan. I also remind everyone not to perform the oil change when the engine is overheated, as it poses significant risks. In short, warming up the car is a tried-and-true method worth following to keep the engine running healthily.
