The radiator in mtbfixlette’s room has sprung a leak. A splodge of Plumber’s Mait has blocked the hole for now. Can I now forget about it or do I need to get down to a merchant for a new rad tomorrow?

Get a new radiator. They’re hardly expensive and you don’t want it leaking when you’re away for a weekend or holiday.

new rad to be sure.. i usually use an epoxy petrol tank sealant to carry me through to when i can get back and swap a rad out..