I tried 2cyc oil in my 06 and had problems with it pinging under high load. second tank just fuel no 2 cyc and is good. it did not do anything for me.just my . i have had better luck just putting in PS.
I bought my 06 used with 135,000 mi on it and have been getting between 21-23 hwy. empty, about 19.5 combined and 14-17 pulling our 35ft travel trailer(8,000 lbs.). all hand calculated.