Colleagues!
Sorry for my long silence. I have two excuses: firstly, my Legend has been so utterly reliable I haven't had a single thing to write about. At its MOT the tester was impressed and said there were no advisories at all, which was pretty good for a 20-year-old car.
Second excuse: my engineering degree course is using up all my mental bandwidth, so lots of other pastimes have been neglected.
However, my beloved Legend isn't quite perfect, as it stinks of coolant, no visible leaks or apparent loss of coolant either, so moral of the storey is listen to Stuarts advice regards to type 2 coolant.