ORIGINAL: crazy nick
yeah was lookin for more of something I could buy at an auto parts store, like lithium grease or something.
Lithum grease is way too thick for diffs. Also, I'm not sure if there are special friction characteristics a diff needs in it's lube.
If you're looking for something cheap try this.
http://www.rcplanet.com/RCE_Super_Di..._p/RCE3004.htm
Super saver shipping with RC planet is $3(at least for me), that's less than $5 shipped.