Hello, I have a 2001 Y61 (Auto) with a ZD30DDTI.

This car has been with us in the family since 2001. Ever since, it has changed Heads twice as of now. Once in 2011 and another in 2018. The symptoms were it overheated and coolant keeps getting pushed out from the radiator filler. After 2018 when the Head was replaced, the coolant is still pushing out from the radiator. Although however, it does not overheat. This then cause me to refill the coolant once a week.

I was told that this is a common problem for ZD30DDTI.

What should I do to overcome this problem? Is there a solution for this?