Posted by Gil on Sunday, July 31, 2005 at 9:17PM :
In Reply to: O.T.-New'05 Cummins ? w/PW Content posted by Sparky on Sunday, July 31, 2005 at 9:40AM :
If it carries the API (American Petroleum Institute)rating as specified by Cummins, it doesn't matter whether it is high-dollar synthetic or rendered dinosaur fat, it will do the job. (my 2-cent opinion) I'm a Delo 400 man myself--never had a problem with 5,000-mile intervals. Mostly light loads, mostly highway.
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