[RC-Monster Mike]

I use 10k in my truggy center diff. It can unload if I make aggressive stabs at the throttle(and also heat up), but heavier oil negatively affects handling on my track(loose and bumpy). All the "possible issues" discussed here can impact heat, but a smooth throttle finger will make a huge difference as well. When I am on the track, I hardly spin a tire. My setup is a little different(1515/2.5d on 5s), so the power isn't as aggressive, but I also use a mild throttle curve to help with low end control. If i am tooling around and making sharp, aggressive stabs at the throttle, I can heat things up.