Originally Posted by
Bidja
Hodge, same problem here 08 CRD. Noticed it approx 4-5 yrs back, coming from behind timing cover at the top of mating face against eng block. Travels down thru and drips off below A/C unit, onto front axle/diff housing and then to ground. Appears approx 36 hrs after veh sitting (mainly in colder months). If driven daily probable would go unnoticed. Cause, yes, dissimilar metals either side of gasket (different expansion / contraction rates), metal gasket cannot accommodate separation and then leak occurs. Think they use a flexible gasket material now (silicon or polyurethane, not sure)
I torqued up the bolts, put a mild solution of stop leak thru, stopped after 6 mths and now only leaks occasionally. I just keep an eye on it as do not loose much coolant (approx 20ml / mth), just annoying.
What did you end up doing or did it take up overtime?