Originally Posted By: goodtimes
A new vehicle that cost 40K, or maybe more, plus tax, plus license, plus insurance, all high range, doesn't get a $50 oil change sooner? I don't get it. I never have or will have the opportunity to spend that kind of dough on a new car. I would spend a couple hundred to install a good bypass oil filter though, in addition to the full flow filter.
I don't know the sump capacity of the 6.7, but my 6.0 piles of garbage have 15qt of capacity (maybe something like 14.8, I forget). If it was a lot of highway miles, 8,900 is not a lot when you have a big sump. It is amazing how long some of those PSD go, some folks ignore them too long (and the 7.3 was forgiving, the 6.0 not). My last "top-off" with a weeping gasket was 3-ish quarts... there was oil on the dip-stick, but not much. I had to fuss at my drivers with that one.