I would just deal with it, they warned you that what you see is what you get and you agreed. Thats like buying something off of ebay and finidng that it breaks soon after you buy it. All sales are final and you know what you are setting yourself up for when you buy from places like this. If you really were worried about getting a quality car that works as you wanted it to you probably would have paid much more and gone to a big dealership with a large reputation. Of course, some people get lucky and some dont, just have to deal with the fact that you got screwed and not in an illegal way. I wouldnt blame the used dealership as hard as most of you are, how do you know that they were even aware of the problem? If you find stop leak in the coolant i could agree, but these guys go through cars steadily and probably dont do much to test them out. For all you know the person that sold it to them could have been the ones screwing everyone.