First thing I did when get my next one was removed that and ditched the water cooling to the turbo and fitted a 82degree stat. Nevers gets hot as only a mild tune (160 bhp ) would invest in a oil to air cooler if I went more revs / boost though. Got a oil to air on my zetec s as used to see oil temps of 120 regularly. Saying that the water fan do t cut in till 110 degrees.