Originally Posted by bigdawg74
I did notice today as I was browsing through the Wal-Mart oil section that Valvoline has a synthetic 5w40 that is Dexos2 certified. Anybody have any thoughts on that?
I personally haven't used that oil but I have used Valvoline oils in the past and in my opinion Valvoline doesn't make a bad oil per se. Are there "better" 0w40's out there, maybe maybe not. There are also some very good dino/syn blends out there too. But I think if the price point of that particular oil is amenable to ya and your OM allows you to run it, I say go for it. If I were in your shoes, and this is just my lay opinion, I'd be more concerned with just having the oil changed out a second time annually than spending all day on what oil is "best". I would fully expect that going from one change to two changes annually on just about any SN/GF5 rated oil, be it 0w40 or 5w30+, is going to help you with your fuel dilution and wear metals problem.
Edit: while in general I agree with your stealership sentiments, it is worth a quick call to their service dept. Often dealerships will run specials on oil change pkgs. Buy X amount of changes up front lowers the overall cost. My Kia dealership does this and it takes the normally priced $49.99 change to something around $30 bucks. Not the cheapest compared to say WM or a Jiffy Lube special but certainly easier on the wallet.