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Re: 11 F450 6.7 frequent regenerations
Posted to HD/Fleet Forum on 7/21/2021

Kyle, get an oil sample. I prefer NAPA because they do a good job showing fuel dilution. Anytime we get any kind of engine issue the very FIRST thing we do is send a sample out for test. We ship them UPS so the lab has them the next day.

For me this is a best... Login to read more.