-Engine Oil Function The oil that circulates through an engine plays an important part in engine life. Not only does it lubricate the fast moving parts of the engine to reduce friction and wear, but ...

We earn commissions from purchases you make using links in our articles. Learn more. Save time and money by changing your own oil. See the best conventional motor oils here. Shopping for engine oil ...

As of dec. 1, two new engine oil blends in development for over five years are officially available on the trucking market. CK-4 and FA-4 are the offspring of the Proposed Category 11, or PC-11, ...

With less than a year to go before licensing is scheduled to begin, a much clearer portrait of the new engine oil category that will enter the market in conjunction with new federal emissions ...

We may receive a commission on purchases made from links. If your vehicle is due for an oil change, the oil of choice is either synthetic or conventional motor oil. But if your car's odometer is over ...

Thanks to the millions of dollars and untold hours of effort on the part of an entire industry poured into creating oil-service category CJ-4 so that diesel engine oil can protect both 2007 and 2010 ...

Oil is a vital component for engines of all types. Not only is it responsible for providing lubrication to numerous moving interior parts, but it also helps prevent friction and the development of ...

If you've ever performed your own oil change at home or even just popped the hood to check your oil level, you may have noticed the mix of numbers and letters emblazoned on your engine oil fill cap or ...

Whenever new heavy-duty engine oils are launched to the public, it is the result of years of study, testing and development. Global researchers spend years working with scientists and engineers ...

While there are other nuances to motor oil classifications that need to be understood before changing or topping off the oil ...