I think I found the answer 0-40 Mobil 1. The dealer has always treated me well but, I question their troubleshooting skills. (Troubleshoot by parts replacement or vehicle replacement). I've used it in many vehicles and it seems to always do the trick. It's more expensive than the regular Mobil 1 but definately worth it. It starts as quietly as a church mouse. I can only guess the that the zero takes care of the finite parts (needle bearings etc) and the 40 takes care of the long term clearance wear.