Change the oil in your vehicle every 3,000 miles. Generations of drivers took this statement as gospel, and for good reason.

Oil is the lifeblood of your car’s engine, helping it run smoothly and efficiently. Over time, however, oil can degrade and lose its effectiveness, which can lead to engine problems if not changed ...

Learn how to maintain your car’s differential with this step-by-step guide. Avoid costly repairs by changing the differential oil and keeping your vehicle in top shape.

Motor oil is a key to your car, lubricating parts that mustn't grind together. And there are lots of potential signals to tell you if it has gone bad.