Can the car still be driven if it shows an oil change is needed?

[DelRobert]

If the vehicle displays a message indicating an oil change is needed, it can still be driven. The steps for changing the oil are: 1. Lift the car, remove the protective plate, and place a container with a capacity 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, then tighten the oil drain plug after draining and wipe it with a tissue to check for oil leaks; 3. Reinstall the protective plate and lower the car, then use a funnel to add oil through the oil filler port. The functions of engine oil are: 1. To separate the surfaces of relatively sliding parts, thereby reducing wear; 2. To carry heat back to the oil tank and then dissipate it into the air to help the radiator cool the engine; 3. To circulate carbon deposits, sludge, and worn metal particles from engine parts back to the oil tank, flushing away dirt generated on the working surfaces of the parts through the flow of the lubricating oil.