I have looked in the TSRM, and the only thing it mentions about the fluid coupling fan clutch is that it should not have any signs of leaking. Now, i don't see any signs of leaking on mine, but is there a way to functionally test the fan clutch? I am going to be moving to an area with very warm temperatures and i want to make sure my cooling system is up to par! I have a good fan shroud, new radiator, and fresh mix of coolant in it right now with a new head gasket. Thanks very much for any help!