hey guys.. seems to be an invisible problem with my motor 10 mpi. only got the engine for another two months but need it to run around on until i lupo gti it .. im loosing water badly now.. ive had pressure test on two occasions to rule out head gasket and also checked the oi for mixture with water nothing there. also had a die put through to see for any leeks. now i changed all pipes and jubilee clips and sealed all pipes correctly. don't know what else it could possibly be . and also dont seem to be any abnormal amounts of steam coming from the exhaust or car doesn't over heat :/ anyone got a clue ?