So here is a question - why is it that p38's and in particular the petrol versions are so prone to overheat? I dont mean what are the causes of overheating (blocked rads, viscous fan etc) but rather why is it such a fine line between ok and overheating. It just seems to me that there is no...

Hello all I am a bit stuck at the moment. My 1997 4.6 hse failed its MOT last October and has been sitting on my driveway since. It failed on a couple of steering ball joints and it overheated in the mot bay so the test couldn't be completed. Was planning to get stuck into it in the spring...