WELL
you're also supposed to run synthedic / synthedic blend (5-30w) in newer cars, and older cars didn't have synthedic engine oil readly avaliable when they were made.
changing your oil at 3,000 miles won't hurt your engine, but it will probably prolong your engine life.
you're also supposed to run synthedic / synthedic blend (5-30w) in newer cars, and older cars didn't have synthedic engine oil readly avaliable when they were made.
changing your oil at 3,000 miles won't hurt your engine, but it will probably prolong your engine life.