The only other thing of interest is insolubles, which at 0.3 for this last OCI, is virtually equal to 0.4 for the longer GC OCI.
Nice drop in iron and lead levels (about a third of the GC OCI levels), some increase in copper (about 25 percent)... given that oil analyses could have a +/- 1ppm on anything (including something that really is zero), the copper levels may be about equal in my estimation. Nothing I'm worried about.
Biggest difference in OCIs? I didn't use half a can of throttle body cleaner spray this past OCI
I don't know how much we can attribute to Pennzoil Platinum because of my M1 blend, but it seems to be doing a terrific job!
[ December 12, 2005, 07:18 PM: Message edited by: 59 Vetteman ]