In all of my sleds I run Polaris injector oil; not cheap at $8.00/bottle. While my buddy and his family insist on using the cheap Quaker State oil at $2.00/bottle. This is the stuff you mix with gas and use in your weed-wacker. I tell him he's going to ruin his sled with it but he doesnt believe me; that stuff gets way too thick in the cold. Anyway, what do you guys think of using this cheap oil in sleds?