Yes I know about the warranty issues, but do you think with the tighter tolerances in todays newer engines that this oil would cause increased operating temperatures which could lead to greater wear? My concern is the new SM motor oils not containing enough zinc and phos. among other things. I may even run this oil year round because of all the short trips to work. It seems that these oils are the way to go and the pcmo's are more about cafe issues which may lead to increased wear even in the new SM oils. Let us have a debate.