I have a 2001 P38 DHSE with c. 118,000 miles on the clock.
It has had its Head Gasket done in the last 2 years. However I have noticed that is has been using coolant. The was checking the levels yesterday and noticed no coolant in the Expansion tank! It required c. 800ml to fit the system up. The temp gauge hasn't moved from the middle.
I would like to eliminate a leaking pipe, where are the common places that the M51 engine could leak?
I have checked the oil cap and can't see any white looking mayo.
Many thanks Tom