I've actually started using Super Lube for all my greasing needs. Anywhere you use traditional petroleum greases, you can use this instead. Much cleaner, much slicker, and much more consistent. It's entirely synthetic with PTFE particles suspended. I own an angel, so I only really use it for LPR and ram greasing, but it seems especially well-suited to spool valve guns where the grease would be under constant wear. You can read more about it and buy it here: http://super-lube.com/product_description.htm . Shipping from the manufacturer is outragues though, and I'm not sure if it's available where you guys are (I'm in the US). I got a 3 ounce tube off eBay for about $8 shipped to my door. If any of you gun techs out there are reading this, give this stuff a try, it's righteous.