70/30 Highway/city mileage on this run. It's smooth stuff which has been my experience from Valvoline. Not liking the iron even though I know it was not bad at all. I like that it stayed in grade and didn't use any oil. Long highway runs up and down FL coast for work. Would have like to see Iron closer to 15. Current fill is Castrol EP 5w30 (5 qts) and 1 qt of Edge 0w40. Wanted to see if the little added thickness would help on these high heat turbos. I still think Silicon is from the oil pan swap. But I changed the used MC to a fresh Wix XP air filter for good measure. Not a bad run but I still feel that Castrol Edge and Edge EP are a match for this motor. Next run will be Platinum Ultra 5w30 for our bitter cold FL winters.