naysjp
Caught the Bug
I searched the threads and read about what oil everyone prefers BUT my question is specfic for when should someone change to a synthetic oil or continue using dinosaur oil now that the Jeep has high miles on it. I have 123K on my 04 TJ and use 30W dino. Should I switch to a synthetic oil after 9 years? Let me know what you guys/girls do on your high mileage Jeeps. I want to take of girlfriend so she can keep getting me after a week of work and after running the trails.