Hi guys, am asking this on behalf of a mate whose at loss to why he is losing coolant. he has a 1.8 diesel 97 escort (same as the the mondy lump i believe) and is losing water in a few days, there is no signs of puddles, drips or steam. he recently took the car to a garage who carried out a coolant system pressure check which passed ok, the guy said its not external so has got to be internal. I asked him about the oil and there is no signs of mayo effect? sorry for going on, any help/ideas appreciated! cheers ppl.