I normally don't post threads like this, but I'm kind of interested in feedback from those of you who have found a "one oil for everything". Mine is Mobil 1 ESP 0w30. I've run it in two different trucks, it's in my Troy Bilt pressure washer, and it'll be going into my generators next time they get serviced. I'm very pleased with it and I would've liked if I'd taken the plunge sooner.