quote:
Originally posted by Terry:
Slick's specific fuel consumption is a good guideline but why not use oil analysis to determine that interval ? There are too many variables to consider to safely go longer drains without some way to confirm. UOA is the cheapest and most accurate way to do that.
I am about to pull an analysis on a 1999 VW/Audi 2.0 using GC 0w-30/LC for 15,000 miles and 13 months of use. The same engine my dear kids ran without coolant for more miles than I want to remember. See the UOA's posted at BITOG.