which Ball Diff grease?
 

Ok, so I'm building my new losi XXX ball diff. For the rings and diff balls, I'm using some B-Fast clear diff grease. For the thrust bearing, I'm not sure which to use. I have either some orange MIP grease that came with another MIP diff I had, or some losi black grease. What should I use?

I'm building it right now, so i need an answer quick

I'm not a Losi guy but I'll try.

The thrust bearing I guess is similar to the thrust ball setup on the associated I guess ya? I would also guess the manual is suggesting the black grease. There is a reason the two sets of balls take different lube. The thrust area is almost more important to keep lubed than the diff balls themselves. They receive more pressure per ball than the diff itself. I would go with black grease for it's lube properties over the silicone, which may be too thick anyway.

Like I said I haven't touched a Losi, so I am going based off of my associated experience.