I thought my transmission was finally gone. I had a slow leak in one of the lines going to the radiator. When I got home I couldn't even pull my durango into the driveway. I put two bottles of Lucas transmission fix in it, and to my amazement the tranny came back to life. I have 116,000 on my durango and I plan to use lucas products in the engine, fuel systen and anywhere else I can to keep my SUV running long and strong. Thanks Lucas!!!!!!!!!!!!!!!!!!!!!!!!!!