I have PU 5w20 ready to pour into my 2007 4-Runner the first of April for a 6 month run. I am really anxious to see how it does. Currently, this SUV has M1 0w30 and I believe this is a really good oil for this engine....very smooth, great gas mileage and a lot of power available (other oils have made the engine feel boggy). Anyway, I will update everyone on the asz meter....how it feels on my bottom end.