Oil refiners produce several grades or blends of lubricating oils for use in automotive engines. Some are detergent formulations, while others are non-detergent motor oils. The basic difference is ...

Maintaining a car also involves more than just frequent car washes or periodic filling up of the gas tank. The most important ...

If your mechanic recommends a high-mileage motor oil, how do you know when it's worth it to upgrade? And what are the pros ...

Changing your own motor oil isn't that hard, and it can save you a lot of money, but it's important to know which kind of oil ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International ...