Originally Posted by BrianG

Thanks for the input!

Yeah, I have read about 130-140* tops after a full run in the past. Now, all I do is use the "hand test", and everything seemed fine, until this weekend. The only thing I can think of that changed from last year was the addition of a center diff. It was a bit loose before I put thicker oil in it (50k), so maybe it diffed out and the motor spun up too fast causing it to overheat. I don't really like the centerdiff in the Revo anyway and plan to remove it. It seems that if it's too loose, it diffs out badly; and if I put thick enough oil so it doesn't diff out, the diff is all but locked.

BTW: This isn't a hacker motor, it's a BK Wanderer.