That is not true, I believe that any way you can lower your oil temperature is a good thing, me personally, instead of having to spend another 5000.00 to rebuild my motor I could take that 5000.00 and take it even further, besides, with the way these newer bikes run on the lean side, they run hotter, I have had plenty of Shovelheads with 93" stroker motors that did not run as hot as my twin cam, so I am electing to cool my motor. 400.00 compared to 5000.00, I'll buy the cooler.