Forum: Grand Cherokee - WK
05-28-2010, 12:30 PM
Switching to Synthetic Oil in High Mileage Engine
Hi, I have a 2006 WK with 99,220 miles on it that I just purchased. I have been thinking of changing over to full synthetic engine oil. I'm a little nervous as I tried this on a 2001 XJ 4.0 and had...