OK guys, a buddy and I have been having a debate. I want some expert opinions to back up how right I think I am I'll send this link to the buddy once there are several replies.. hopefully he'll believe me then. My buddy ran out of brake fluid and decided to use ATF in his system. I told him ATF is oily and would fubar his system. He insists its fine. Am I right? I told him to use brake cleaner on his brake parts. He used supertech carb cleaner. Doesn't that stuff have a mild oil in it that will demolish brake shoes and whatnot? Is he really right and I'm just anal? Or is his brake system as FUBARed as I think it is?