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The first oil change we tested which was our second change we had 13% fuel in the oil. Ford said they couldn't fix it so I did. I took all of the pollution controls off and now we have less than 1/2 % fuel in the oil. About 1% per 1000 miles is normal for these engines for both Commings and Ford. Chevy doesn't have the problem. They inject fuel for the regen in the exhaust pipe while Ford and Cummings inject it in the engine on the exhaust stroke. After you remove all of the pollution controls you have a far different truck. You would haft to try it to believe it.
Lynwood
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