I stand corrected on Slip 2000. You guys are right about what it does. I thought it was only lubricant, but it is also a rust preventor-and moisture displacer. I could have saved some money. I have about 3/4 of a bottle of it. I did a little research and they even make a variety for BP rifles. Tom.

Clenzoil, without a doubt. Never any rusting problems.