While “plus” often reflects marketing hype rather than any real extra capability, that is not the case for CI-4 PLUS. The latest engine oil classification enhancement from the American Petroleum ...

There's a new head of the committee developing the new heavy-duty engine oil classification, known currently as PC-11 for proposed category 11. HDT talked to Shawn Whitacre to find out what fleets ...

The primary purpose of engine oil is to stop metal from touching metal. When metal surfaces come in contact, they grind together causing friction. That creates heat, stress and wear. Engine oil is ...

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 ...

This story appears in the July 25 & August 1 print edition of Transport Topics. WASHINGTON — Shell Rotella has unveiled its new lineup of lubricating oils, products designed to maintain the ...

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 ...

Demands on heavy-duty diesel engine oils have changed alongside engine technology and fuel formulations. “As engine technology and fuel technology have evolved, the environment in the crankcase has ...

You may recall the article entitled "The Slippery Truth About Oil" from the June '06 issue of HPP (also available at www.highperformancepontiac.com). In it, we discussed the negative effects some ...