Why is there smoke after changing the engine oil?
1 Answers
Smoke after changing the engine oil may be caused by overfilling. Precautions for changing engine oil are as follows: 1. Different oils cannot be mixed: If changing from high-grade oil to ordinary oil, the original oil should be completely drained and the lubrication system should be cleaned thoroughly; mixing is not allowed. 2. Pay attention to the oil change interval: The oil change interval is generally determined by mileage and time. For example, conventional mineral oil should be changed every 5,000 kilometers or six months, semi-synthetic oil every 7,500 kilometers, and full-synthetic oil every 10,000 kilometers. Actual road conditions should also be considered. 3. Pay attention to the oil quantity: The oil level should be slightly below the mark on the dipstick, and overfilling should be avoided. Engine oil is extremely important for engine operation as it performs two major functions: lubrication and heat dissipation. Therefore, the engine should never run low on oil. However, excessive oil (above the upper limit of the dipstick) can have adverse effects. Too much oil increases the crankshaft's rotational resistance, reduces engine power output, and the excess oil may enter the combustion chamber, leading to oil burning, blue smoke emission, and increased fuel consumption. This is a counterproductive practice.
