Originally Posted by Matthew_Armeni

I'll check tomorrow to see.



I tested a spool in 13.5 and various heavy weights in the center diff. The spool had the potential to lay down the single fastest lap, but wasn't as consistent lap to lap. It also didn't land jumps as well. You had to be very precise while driving it. Same thing with heavy diff oils but to a lesser extent.

I can see a slipper for carpet/turf tracks, but honestly the center diff is so much more forgiving I think it's benefits outweigh the slippers benefits, especially if the slipper isn't that much lighter. If the slipper were lighter and also slipped the front and rear independently then I can see using one, but otherwise I'm always going to run a diff.