Glycerin on guillotine blade?

I mainly cut digitally printed work on 111# 12pt C2S and seem to get knife draw starting at about 1200 cuts. I've read that using a lubricant on the blade can extend life and reduce knife draw. My machine's manual says to use glycerin. The company I use to sharpen the blades suggested soap.

Is this practical and wouldn't it make a mess of the paper?