I hate to tel you Bud ;but on the 3.0 the fan is attached to an idler.. not the water pump. You may have a bad radiator cap or a small hole in the cooling loop. The fluid will evaporate when the engine is up to operating temp. The easiest way to check is to use a cooling system pump. Remove the radiator cap when the engine is cold,pump it up to the normal operating pressure & look for the leak. There are 2 freeze plugs on the back of the engine covered by the bell housing. I found 1 on my engine that looked really nasty when I pulled it out for an engine swap.Usually coolant going into the combustion chamber results in steam from the exhaust all the time...you know, like when you make a short trip in the dead of winter. Good luck & let me know how this problem turns out. I hope this has been helpful.Low coolant doesn't always = blown head gasket.