The motor oil is constantly exposed to heat and friction from the moving parts in your engine. Over time, this causes the oil to become less effective at lubricating your engine and protecting it from wear and tear. As a result, your engine has to work harder, which can lead to increased fuel consumption and reduced performance. You should change your oil according to the recommendations of your vehicle manufacturer.

 

This is usually every 3,000-5,000 miles or so, but it can vary depending on your driving habits and the type of engine oil that you’re using.