When do your radiator fans turn on? On my 06 C2S, they don't turn on that often (been cold lately) but they are definitely affected by the AC being on, even if it's not hot (for example dehumidified heating). Sometimes only one side turns on (passenger) instead of both fans at the same time. Anybody else notice that?

Sometimes the fan stays on for a long time even though it's not hot.

Oil is 200, water 175 but I hear the water temp gauge is pretty useless except as an idiot light.