What happens if engine oil is not changed on time?
2 Answers
Not changing the engine oil on time will accelerate engine wear and affect engine performance. The steps to change engine oil are: 1. Lift the car, remove the protective plate, and place a container of about 10 liters under the oil drain screw; 2. Unscrew the oil drain screw, use an air gun to blow for two minutes at the oil filler port, after draining, tighten the oil drain screw and wipe it with a tissue to check for oil leakage; 3. Install the protective plate and lower the car, use a funnel to align with the oil filler port to add engine oil. The functions of engine oil are: lubrication and anti-wear, auxiliary cooling, cleaning, sealing and leak prevention, rust and corrosion prevention, and shock absorption. The types of engine oil are mineral oil, semi-synthetic oil, and fully synthetic oil.
I used to think it was fine to delay oil changes until my engine suddenly made a loud noise on the highway. Experienced drivers know that oxidized oil loses its lubricating effectiveness, causing engine parts to grind dry and potentially leading to cylinder scoring. Overused oil can even turn into a sticky sludge, clogging oil passages—I've seen engines with half a finger's thickness of black deposits inside. Not to mention the acidic corrosion of precision components. My repair bill was over 8,000 RMB—a painful lesson: regular oil changes are far cheaper than engine repairs!
