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I have, or have now had 2 tru cool max trans coolers from dieselsite spring leaks on me within the past 2 months. This strikes me as being odd. Both times it has been from one of the two open channel bypass tubes located at the beginning of the cooler. It would appear that Minnesota has now turned permanently into Antarctica. Both times I have had this happen it was -20 to -26*f and started leaking right after start up. The truck was plugged in all night although I don't believe this would help at all. I am at a loss for words and the only idea I have would be to add a thermal bypass valve, however I thought that the 4r100 already contained one. Any help would be appreciated as I grow tired of replacing this cooler and bleeding the power steering system again and again.

Thanks!
 
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