Ive got a 1999 V40 1.8 XS. 118k. Over the last few weeks it has been losing coolant. The car does not overheat and drives very nicely! When the car is cool the coolant level decreases however when it warms up, the coolant seems to rise again. It is actually losing some coolant but not a great deal. I have had the head gasket tested via a pressure and gas test and there is no sign of this having been compromised in any way. Just wondered if anyone might have any ideas on anything else i could get checked!!!? Thanks!

 

Don't know, but the same thing happens on my '00 V40. No leaks, and good compression too.