Every one of us has his or her own unique combination of particular car-oil-usage factors. Having just done a quick search of the UOA section, I don't see any posted results reflecting a situation similar to yours. It certainly is fun for us to match wits arguing our respective opinions, but for now, that's all they are -- our opinions. If you're motivated to try the Valvoline, then by all means do so. Do a UOA somewhere between 3000 and 5000 miles, and see how it does for your car. If the results are good, then keep on using the stuff. If not, try something else. BTW, for my last four years at Cherry Point (effectively the same climate as yours there at the Swamp), I used M1 5w-30 in a Honda Civic (1988 LX sed). That was way before I even knew you could do a UOA, but that car ultimately ended up lasting over ten years with about 150,000 on the odo, and still had a spotless engine, inside and out, and I never saw a hint of smoke from the tailpipe. I'm still not sure why I traded it in. . . Anyway, if the Valvoline does not work out well, try M1 next.
