To understand how overfilling your engine oil is too much of a good thing, it’s helpful to provide a little background. Engines are comprised of hundreds of precision-crafted parts working in unison ...

Everything, even the smallest of things, can affect the performance of your engine. Whether topping off your fuel tank or driving on motor oil past its expiration date, you're slowly killing your car.

Where Is the Oil in a Car and What Does it Do? The typical engine has a large oil reservoir (the crankcase) that holds several quarts of oil. The oil is drawn from the crankcase oil pan into a tube ...