katar83 wrote:Its a thermostat after all, its filled with an oil which leaks eventually apparently so replacement bulb is minimum to fix the whole thing when a quick clean doesn't work.
Yes indeed. At £30, it’s tempting, with little risk.
I have a press, so getting it in/ out won’t be an issue.
I have already tried a clean up (off the car), to no avail.
The car is not on use, so now I have some good info to start with, I can take it apart and have a look what’s what.