The diesel engine oil available for your fleet is about to undergo a major change. Two new oil categories, CK-4 and FA-4, have been announced by the American Petroleum Institute (API) and will replace ...

Come December, you’ll see a new API oil classification with lower-viscosity parameters designed to be used in the next generation of fuel-efficient engines. In fact, you’ll see two different oil ...

Diesel engine makers and truck OEMs will, within a few short years, expect motor oil to contribute to the mandated greenhouse-gas emissions (GHG) reduction and corresponding increase in miles per ...

For two decades, we have seen a new API oil classification for on-highway heavy duty diesels every few years. Oil formulations had to change to meet the demands of diesel engines facing ...

If you've ever bought a quart of motor oil for your vehicle, you've likely encountered the letters API somewhere on the label. In fairness, there are a lot of abbreviations, symbols and odd number ...

Anyone who owns a piece of equipment or truck for work should be aware of the Proposed Category 11 (PC-11) next generation of heavy-duty diesel engine oils. PC-11 has been in the works for at least ...

For any vehicle, the most important factor in prolonging its usability and preserving its performance is regular maintenance ...

A survey of crude oil science commissioned by the U.S. Department of Energy is being cited, rather loosely, by the oil industry’s national lobby to discredit proponents of compulsory treatment of ...