What have you done today with your Austin Seven

[John Mason]

David, If you want to try and get the old drain tap out use a little heat applied to the tap. Before you start take the car out for a run to get the coolant warm then whilst still warm apply a little more heat with a blow torch. Try unscrewing the tap whilst warm. Whilst there is coolant in the system it will disperse the heat to prevent the solder joints from melting. If you have ever tried to unsolder a copper pipe which has not been fully drained you will understand what I mean. You can heat that pipe for an hour but still the solder will not melt in the joint.

John Mason.