Stomper,

The 50 was one of the first ones from DA, which were known to be problem motors and are updated for free if sent in. The 150 was a failed bearing that seized up. This was a rare failure that DA contributed to a bad batch of bearings. As usual, DA bent over backwards to repair them for free. They are top notch. My only point is that even the bench mark motors have there problems with holding up and so far I have seen no failures with the BME. I am sure they are out there though. All motors are run on Amzoil synthetic oil.