It comes out of the bottle a lighter color than Quaker State so it "looks cleaner"
Yeah yeah yeah....I know. That has no bearing on how well it works, but it's something I started doing a LOOOOONNNGGG time ago and I have just stuck with the brand. If QS was considerably cheaper, I would (and have in the past) purchase it and wouldn't fret a bit about the protection level it provides. but when they are the same price, I pick Valvoline.