I just heard from the repair shop that my 4100 engine is not good, low oil pressure, valve cover gaskets are leaking very bad, and there is a knocking sound coming from inside the engine. It only has 84000 miles on it, so what do I do, who would buy the car if I put it up for sale, I have about $2,600.00 in the car, they have not told me what it will take to fix the car, does anyone know about what it would cost to fix it Some advice would be great.