What is the name of your state (only U.S. law)? mI live in Ohio, and I bought a vehicle from a private person not a dealer. We drove an hour away to look at and test drive the 1999 ( 2000 motor in it) Durango on Jan.29th 2010 (yesterday). got 45 min into our drive back home after buying it and all the sudden the oil pressure gauge went to 0 and heard loud constant knocking or banging. We called the man who we bought if froma dn he said there is nothing he can do. there was no contract or anything that said "as is" and the ad that was posted said great reliable vehicle and nothing wrong with it. I still have the ad. He wanted $5,000 for it and we payed $4,400. Please is there anything I can do to have the previous owner fix it or give me my money back. thank you