hi there, is there anyone that can help me. i've been offered an r reg mitsubishi grandis in good condition, at a good price, but i've noticed that it is spitting out what looks like oil and water mixed from the exhaust. the owner tells me it's because it has not been used for a while. is this the case, or is there something more serious wrong with it. if it is something wrong, how much would i be looking at to fix the problem. please help before i make a mistake and buy this motor. thank you.