I'm running the Drive Clean Plus 10w30 in my 5.7L Suburban right now, hoping to stop an small oil leak. I'll run it 4,000 miles. Valvoline MaxLife stopped a leak nicely in my Silverado which I sold last year...so I figured I'd try another high mileage oil.
I won't be doing an analysis, though...I'd rather go through two changes before I do....and I have a case of Chevron Delo to go through before then.