Previously, I mentioned that GM, and more specifically, Cadillac has recommended ZMAX as an alternative treatment for carbon knock and oil consumption in the northstar equipped vehicles. In my last post, I mentioned that we had treated several cars with the ZMAX product. I am pleased to report that so far, ZMAX is batting 1.000. Over the years, Cadillac has tried several different methods for fixing the carbon knock and oil consumption issues on these cars and some of them worked, but were terribly time consuming. This simple treatment seems to work better than any so far, and is as easy as falling out of bed. If you can put gas and oil in your car, you can do this.
I just wanted to share this for anyone that might still be figting with these concerns.
I just wanted to share this for anyone that might still be figting with these concerns.