need diff grease/oil help on FLM bulks

[OldSoldier]

I assume you are talking about the FLM combos that combine the bulkhead and 1/8 scale diff housing together. I have the same setup on my E-Maxx with FLM chassis. I use Hotbodies Lightning diff gears from this web site (but I've had problems with them). I don't use any diff grease. I just use a light coat of lithium grease just for lubrication.

My problem is that I've had to go in and clean them several times because they get sticky. The outdrives/drive cups should rotate smoothly when turning one wheel while the other spinss in the opposite direction. It appears the plastic housing that attaches to the big diff gear and holds the little gears wears and sheds. The little black debris collects inside the diff housing. That has been my experience. I don't know what to do...I was thinking about trying some OFNA diffs.

OldSoldier