Hi guys

I have an MB140 and coolant seems to disappear overnight while parked.

Had hoses and pump checked to no avail, steam is coming from the exhaust and I also have condensation inside the oil filler cap with grey/milky oil forming at this point.

No water is leaking into the oil sump as dipstick is clean, also had pressure test on cooling system / head and all checked out fine.

Any ideas much appreciated.

Cheers