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[pickuprover]

Electric fan will increase horsepower as the engine is not turning the fiscous fan. Generally a couple hp. The main draw back of the electric fan is when they are continualy dunked in the water offroad they tend to seize the bearings, or blow the motor if it comes on while under water... Alternately you can switch it off from in the cab if you wire it properly to allow you to wade without worrying about soaking the engine with spray when the bow wave fails to keep water out of the engine compartment. Just make sure you turn it back on as soon as you finish wading or else you will over heat rather quickly. They are a bit of work installing as you need to get a sensor into the coolant to turn on the selinoid that in turn turns on the fan when the engine hits a certain temp.... There are pro's and cons.

I personally like the fiscous fan as there is very little to go wrong with them. If I am doing a lot of deep wading then I just remove the fan belt for the crossing and put it back on at the other side... big advantage to this that I see is that if your fan is throwing water, then your alternator is probably under water... unhooking the fan belt, prevents the alternator from turning on and frying your alternator circuits while under water. However it is a little more work, but it is only neccessary when doing deep wading at very low speeds where you cannot keep a bow wave to prevent the water from entering the engine compartment...