hi, thanks for the reply's, works kept me pretty busy, but on further enquires it would seem that the expansion tank on the s type are prone to cracking / leaking, mine loses the same amount of coolant each time, not had time yet to get it into a garage to check
I have a problem with my 03 s type, the battery is going flat if I dont use the car for a couple of days. The nice man from jaguar seemed to think that the duo valve was to blame, anybody else have this problem ?