GM's new dexos1 engine oil hit the streets on October 1. Interestingly, only two US major oil companies say they will offer a licensed dexos1 engine oil for passenger cars (ExxonMobil and Shell). Whereas others say the they will have dexos "capable" engine oils, they are turning their backs on GM's hefty licensing fee.
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Also, Valvoline was the first to say no to GM... looks like most other majors followed their lead.