Wow! Ignorance abounds..frequent drain intervals are a necessity no matter what kind of oil you use. 3 thousand miles of oil contamination is still reason to change the oil no matter what kind you use. You talk about heat? How hot do you think your turbos can get? Regular oil wile coke up much faster than synthetic oil. And if you still have the auto stop start,you increase your start ups by a huge margin, and start up is the place where most wear occurs. Synthetic oil flows more freely during cold starts.plus the better additive packages and detergents. There is no comparison synthetic is vastly superior in every way.I suggest you find better sources for your oil information.you have been mislead.