reutz;1599119; said:truck is an 05 lly and has 40000 miles, and the coolant is looking brownish in the overflow tank. any suggestions??? i have red that dex-cool is no good so what am i supposed to use??
schmibm;1601142; said:Is any long life coolant the same as Dexcool? We use Cat products at work and they use a long life coolant as well. It seems to be a bit better than Dexcool as I have never seen it turn brown. Don't know if it is compatable though or not.