Valvoline Synpower 0W-40
Thoughts and comments please.
How dare you!!??!!
Do ye not know that we bleed Mobil1 ??? Lol All jokes aside, I've never tried it, but I'd like to see a shootout. Maybe a MythBusters show, at least, huh? If the specs match, I'd like to see other comparisons, i.e. viscosity, durability, how long can you go without a change?
Good question, and nice find, I didn't know anyone else manufactured 0W-40, but then, I never looked for anything else... did you do a cost comparison (??)
Royal Purple makes 0W-40. I recall reading comparison tests several years ago - if memory serves, RP led the pack. I believe it's used today by some NASCAR rides. I switched to RP in both my E55 and SL65; however, had difficulty trying to get 0W-40 locally so went back to my indy's stocked M1.
I'd use it again in a heartbeat...







