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I have seen 2 basic types of external tranny coolers.
One looks like a small radiator and mounts in front of the stock coolant rad. and relies on air flow to cool.
The other has it's own electric fan and can be mounted anywhere.
My concern with the first type is I have several large offroad lights in front of my grill. I need as much air flow as I can get to my rad. Will I be reducing airflow to rad. if I bolt a tranny cooler in front of it.

My concern with the 2nd type is if the electric fan fails and the cooler is mounted so natural airflow does not hit it I may not know until tranny temps start to climb.

How reliable is the Troyer fan mounted tranny cooler vs. a Tru cool or the one Dirtydog's friend sells without a mounted fan.

I will be ordering this week so any help would be great.