What does 5W-30 or 10W-40 actually mean? Here's why knowing your oil grade is important to the health of your engine.

These best motor oils will help protect your engine and keep it running smoothly all year long, no matter your budget.

Valvoline makes motor oils, grease and other lubricants that keep the gears and wheels turning on the male-dominated tracks of auto and motorcycle racing. It also makes Eagle One and Car Brite ...

What do you recommend I change out now that we're closing in on 70,000 miles? Q: What is the difference between motorcycle oil and regular engine oil?

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.