Fiecos Dan: I know the normal gauge isn't that accurate but it still showed up the massive difference before and after i fitted the alloy rad. Fans didn't cut in, i've got a seperate switch that i always flick on when i'm doin the cool down lap. As well as that the rad i had before wasn't old. In reference to the water temps, i agree that over 100 isn't ideal but my mates s1 track car that we use runs at around 110 when gettin abused on track....and to be fair it's never actually caused any problems, it's purely a track car and only ever gets thrashed!