Happy to re-cap the steps I’ve taken for anyone to try. A few points to keep in mind – I’d already recently changed the coolant in the car, so I didn’t want to loose too much coolant. If you’re having problems with your heating it would seem to make sense to also first change your coolant. I should also add an “at your own risk” disclaimer, I obviously can’t be responsible for anything that happens as a result of anyone trying this (unless it’s just a lot of heat inside your car! ) – you’re goi
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