Do you want your car to be running in top-notch condition? Below are given a few car maintenance tips which you can perform yourself. Follow these suggestions diligently if you want your car to run smoothly and not give you any problems. 1. Engine oil – Oil is a lubricant which reduces friction between parts of the engine. It also assists in heat dispersion. Engine oil absorbs heat that is produced in the engine combustion chambers, thus preventing overheating. Oil also prevents rusting, corrosion and damage of essential engine parts.