Don't feel bad running the Delo as my H/C LS1 is sitting in the garage with Schaeffer's 15w40 PAO Blend in it's crankcase. I will be posting an UOA here before winter of this oil in the LS1. So far I've noticed no loss of power and I recently got 28.2 mpg on a 500 mile trip. Average speeds of 75mph with AC on. Not bad at all for 416rwhp! My last UOA I mixed 4qts Schaeffer 10w30 Blend w 2 1/2qts 15w40 Blend.....Results are here http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=3;t=001747#000000
