I was thinking of sending in my oil to one of those oil analyst places next time. I'm off road weekly, not usually anything radical but around the farm, and towing small trailers, so generally I go 5k to 7.5k. I'm not sure which one is good though?
My friends shop has recently had several vehicles some in with seized lower piston rings.
ALL of these vehicles had from 135k thru 170k on then AND full dealer service records showing the oil changes done at 10k and slightly less.
He told me 2 things I thought were important. (facts)
(1) the...