I have a 96 SAAB 900SE with 165,000 miles. I started it up one day and it started blowing white smoke out the exhaust. I took it in and was told it was the valve seals going bad and leaking into cylinders. I was told to put Lucas Oil conditioner in it. I originally was going to sell my car, but now I cant put that onto someone else. DOes anyone know the cost on replacing the seals? Or should I try a few more conditioning treatments first? Or just knock the price down and sell it?