I have another point against flex fans: there is the possibility of metal fatigue.
I threw an OEM flex fan blade on my old Mustang once. Besides the terrible vibration that sends you back home immediately, I was lucky that it did not take out a radiator hose or some else that was vital.
Sounds like mental fatigue. Those blades are stainless steel. Your 4 blade is pot metal or the crap they make rebar out of. Vibrations, I guess if you bend it and then put it on a Ford...what was the point of that? lol
All I'm saying is it's 4 bolts and you get instant results, good or bad.
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