The fan attached the the motor freespins when the engine is off.
I feel some resistance, but otherwise I can keep turning it, and it does not "lock" like I have read it should.

When the engine is on and warm, if I pop the hood the fan spins of course, and I feel gushes of hot air coming from it.

Is this ok, or something may be wrong?
Two years ago I changed the thermostat. Last month a coolant flush. Maximum temp I have driven it in was 35 deg C and maximum temp it has reached is about 90 deg C

__________________
Smoke Silver 1994 E220 Coupe Automatic
0 kilometers 6 September 1994
100,635 kilometers - 6 September 2010