James, on the ser 1 the the turbo is only oil cooled. This was a change with the ser 2 where ford decided to put one pipe from the turbo into the side of the rad...Some upgrade alloy rads dont even have the turbo cooler hose connection. I actually got a bolt, silicone and steel hose clip to block my off. My turbo is running fine and I know one other lad from the rs club who's is the same and he has had no problems yet!!