I have a leaky headgasket and oil is seeping out the right side of the engine. Its not a lot, but its causing my cooling system malfunction. (gunk in the radiator and overflow tank.) I took it to the Mitsu dealer to get an oil change and they said it was cuz of the leaky headgasket. I didnt get a price quote though. Anyone know how much replacing a headgasket is gonna cost me?