-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 ...

Two new engine oil blends in development for more than five years have been officially released on the trucking market: CK-4 and FA-4. The oils are the offspring of the Proposed Category 11, or PC-11, ...

Selecting the right engine oil can be challenging. Between the various different brands and the confusing numbers and oil classifications, you may feel overwhelmed while staring at hundreds of bottles ...

Shell's Dan Arcy examining engine components following teardown testing conducted two years ago as part of the company's PC-11 development process. (Photo by Sean Kilcarr/Fleet Owner) Dan Arcy, the ...

Many enthusiasts look to diesel motor oil as a high-zinc alternative, but is it the best choice? A certified lubrication expert explains the difference. It is widely known that diesel engine oils ...

After 2010, with the advent of selective catalytic reduction (SCR), engine stresses and many of our concerns about maintenance actually eased. But growth in the world’s economy, in traffic volumes in ...

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 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 ...

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 ...