Posted 6/30/2020 19:08 (#8346020 - in reply to #8345655) Subject: RE: Diesel power unit Oil Change interval.
I would send an oil test off. I have really been able to extend out some of my oil changes. I think the last one I did was through Blackstone labs and it only cost 38 dollars. They send the kit for free and you just put it in the mailbox.