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Old 05-27-2024, 03:18 PM   #21
Montana Master
Join Date: May 2006
Posts: 1,717
M.O.C. #5751
My owner's manual had four is each and it's oil change interval:

Severe Service: 25k

Short Haul: 35k

Long Haul: 50k

RV: 35k

It might be buried in the verbiage, but I did not see an explanation for the four categories.
Cat320 is offline   Reply With Quote
Old 05-29-2024, 02:05 PM   #22
Seasoned Camper
Join Date: Aug 2017
Location: Johnstown
Posts: 51
M.O.C. #20360

This is all Iíve ever used in my 2017 F450. I use a Royal Purple oil filter and change every 10,000 miles.
mleeder is offline   Reply With Quote

diesel, oil, quality

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