A. It depends. If you drive mainly long trips at highway speeds, changing your oil every 3,000 miles would not be necessary. If you’re a stop-n-go city driver, caught up in traffic a lot, the 3,000-mile interval is advisable.

Changing the oil frequently is the most important thing you can do to extend the life of your vehicle’s engine. Think about it. Motor oil lubricates, cools and protects the parts in an engine. It does it much better when it is clean, has its additive package intact, and is not contaminated. It is truly a lot cheaper to change your oil than your engine.