-6 degrees and the radiator fan is running?!

servus, so sometimes I wonder about my omega… I found something to a little higher temperature about the search, but I found that a little bit over. what is defective then, when the fan runs at -6 degrees outside temperature after that?! my temperature is stuck in the driving mode around 92.5 – 95 degrees. I think that’s normal so far, or? after a little ranking it also rises a little bit higher, but then comes back to quite fixed direction 95. n 10 minutes and I leave it back on afterwards, the temperature is 100 degrees, but then sinks again. big cooling circuit is up, so it can’t really lie on the thermostat. after a longer and a bit harder ride, the colleague smells like burnt gasket or the like in the engine room muffts like to have a gasket mix. oil loss I don’t actually have one, at least not for a wedge rod and if it would siff, I should see it clearly in the snow now. he’s a tip for me? greetings, Thorsten