Motor oil is one of the most important fluids in your vehicle. The purpose of motor oil is to reduce friction and keep a vehicle's engine clean and corrosion-free. Another critical function is to ...

Synthetic oils have caused countless debates and confusion across nearly every automotive forum, and often with good reason. Legally, the term “synthetic” has a pretty loose definition. While some ...

CARS.COM — The variety of oils on the shelf at an auto parts store can bewilder those unprepared for a do-it-yourself fill-up, but if you’re looking for the fastest answer to whether or not you should ...

In addition to removing deposits, Valvoline has discovered another ability of its Restore & Protect motor oil, one that it's ...

Last week we explained the basics of motor oil, from viscosity to additives and everything in between. Now it’s time to tackle a much more contentious issue: synthetic versus conventional. Which ...

I just changed the oil in my Nissan Pao last week, and in doing so I was warned—several times—that my plan to replace the conventional oil in my car with synthetic was a terrible idea. But you know ...

A basic understanding of lubricants – and the differences between synthetic and mineral oils – car lead to cleaner engines. Sadly few drivers spend much thought on what oil to use in their engines.

Motor oils are broadly categorized into fully synthetic, conventional, and synthetic blends (also called semi-synthetic or part synthetic), with semi-conventional and high-mileage full synthetics ...

Its pretty amazing when you think about itall those metal parts spinning away furiously but never making contact. Oil makes it all possible. In addition to serving as a buffer against wear, oil also ...

I’ve been getting a lot of mail regarding using synthetic motor oil in vehicles. Questions such as: Should I use synthetic oil? Does it work better in some cars than others? Does it cost more? Do I ...