Wes,
I would recommend using a small cooking thermomiter in the expansion tank and check it againt your gauge. I found that when my gauge was reading 190 the thermomiter read 163. I had checked it after the car had cooled eneough to safely remove the expansion tank cap. You can check the accuracy of the thermomiter by bringing a pot of water to boil and seeing if it reads 212.
I am dealing with the same delemma as you and wondered what you thought of the fluidyne radiator and what you paid for it and where you purchased it from. Also did it lower your running temperature?
Jim
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