Is it okay if the engine oil is slightly above the maximum mark?
2 Answers
It is generally acceptable if the engine oil is slightly above the maximum mark. The base oil is the main component of lubricating oil, determining its fundamental properties, while additives can compensate for and improve the shortcomings of the base oil, providing certain new characteristics, making them an important part of lubricating oil. The method for changing engine oil is as follows: 1. Lift the car, remove the protective plate, and place a container of about 10 liters under the oil drain plug; 2. Unscrew the oil drain plug, use an air gun to blow for two minutes at the oil filler port, tighten the oil drain plug after draining, and wipe it with a tissue to check for leaks; 3. Reinstall the protective plate and lower the car, then use a funnel to add oil through the oil filler port.
Last time I changed the oil in my car, I also slightly overfilled it past the maximum mark. Exceeding the limit by a little may seem harmless, but it poses hidden risks to the engine. Excessive oil can cause the crankshaft to whip the oil into foam during rotation, reducing lubrication efficiency and potentially accelerating wear on internal components like pistons and bearings. Increased oil pressure may also lead to oil seal leaks, and in the long run, it can raise fuel consumption or contaminate the catalytic converter. While driving short distances might be okay, it's recommended to remove the excess oil as soon as possible: use a simple oil extraction tool or visit a repair shop. For prevention, develop the habit of checking the dipstick monthly when the engine is cold to ensure the oil level stays safely in the middle of the marked range. Engine health depends on regular maintenance—neglecting small issues can turn them into big problems.
