When you look at a bottle of motor oil, you are assaulted by all the numbers and letters and whether or not it's synthetic. Without knowing what those figures signify, it can look almost random when ...

This month, ExxonMobil will announce two motor oils formulated to meet the latest American Petroleum Institute (API) heavy-duty engine oil classification, CI-4, which was developed to ensure proper ...

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 ...

SAN RAMON, Calif.--(BUSINESS WIRE)--Aug. 14, 2006--Owner operators and fleet maintenance managers are encouraged to sign up for Chevron's free API CJ-4 seminar at this year's Great American Trucking ...