I have a 2.7 biturbo avant and every time i stop after a drive a get a few drops of oil from the passenger inter cooler. I think my turbo seals may be gone and thats why there is oil in the one inter cooler. Does this sound rite? The car has only done 52k miles. Also if this is the case and i have to pay the hundreds to get it changed would it be worth fitting ko4 turbos instead? If so what would i need apart from 2x ko4 turbos, 6 injectors and a remap?