+1 to what Pauly said. For my SKS and Mosen Nagant, I use Moly-Lithium grease. On AKMs, I use a little of this grease on the rails after I clean the rifle with my home made Ed's Red, but even if I don't grease up the rails, they're still pretty much good to go with the residue of the Ed's Red, which has ATF in the ingredients.
Mix up your own Ed's Red. From this website, you can see how you can make it yourself, and the "why" for each ingredient.:
http://www.frfrogspad.com/homemade.htm
From the 'Ed's Red' formula section:
You can divert a small quantity, up to 4 ounces per quart o