I've just found a nice balance of speed vs heat in my 8T on 5S running 13/48 gearing, but I need to change the oil in my diff's as the tyres are ballooning like crazy.
When we add thicker diff oil to our f/c/r diffs (to stop our tyres breaking traction), aren't we essentially placing a greater strain / resistance on our motor's and ESC's and adding heat?