One of the most common car-care questions is also one of the most confusing: what kind of motor oil do you really need—and is synthetic worth the extra cost? Motor oil keeps your engine lubricated, ...

Costco is one of those places where you can get almost anything for your car, including motor oil. But is Kirkland Signature ...

Synthetic oil is worth the extra cost for most drivers. It lasts 7,500 to 15,000 miles between changes compared to 3,000 to 5,000 miles for conventional oil, performs significantly better in ...

ConocoPhillips' new Triton ECT 5W40 Full Synthetic is a premium API CJ-4 diesel engine oil with potential to offer fuel savings along with other benefits. The new Triton oil is made from high quality ...

Competition in the world of business is a good thing for the consumer, right? It keeps prices down and forces innovation. Well, the motor oil space isn't as competitive as you might have thought. For ...