My bike has been slowly running hotter over the past few months. It used to always run below 80 degrees (except on hot summer days when stuck at a robot) but now it's running between 77 - 87 degrees in winter while riding. A number of possible problems have been proposed - thermostat, waterpump etc, but before I send it into the shop to be worked on I want to try cleaning the radiator, which is quite clogged with bugs.
I'm thinking of using a corrosive cleaner such as caustic soda, which has been recommended to disolve the bugs without harming the fins. Does anyone know if this is a good idea, or if it will damage the paint/metal/plastic areas?
Thanks for your advice