A trickle of coolant was inching its way down the road and a nasty smell of hot oil hung in the air. The Wreck was very sick indeed.
OK, so what's up? Oil control ring on number three cylinder, a knackered head gasket, and now I have an unreasonable suspicion of the water pump.
No worries, I've been here before. Engine out, fortunately easy on a Wreck, then have it to bits and do what's needed. Last time I did this I had the option of another engine, but the supply of Wrecks has dried up in the two decades since. A call to the World Authority on Wrecks is in order.
Why do this? If you have to ask, you won't understand.