Seventeen years of gunk, corrosion, chemicals, road film, Scottish weather, high operating temperatures and environmental trashing* means the two radiators on my car need replaced. They're on their last little sad radiator legs. They're leaking. Something I noticed when a) I noticed a warm fluid leak dripping down by the front wheel that certainly wasn't coming from me or my trousers and b) the temp gauge, always steady at 80 degrees whatever the weather, decided to move by all of a millimetre to a little more than 80 degrees. OCD me quickly sweated and panicked at the sight. Fortunately these events clashed with an MOT and service booking so there was an opportunity to get everything sorted in one sweet if sightly expensive move.
*May also just have been yet another random mutant algorithm. Or a perhaps a big mutant algorithm did it and ran away.