I've helped Jerry with the development of Presto Slide. The Sheriff is right a little goes a long way. I'm switching back and forth between this and the Yamaha slide lube. I have found that the Presto Slide is almost as quick as the Yamaha but smoother and lasts a bit longer. He has also developed some maintenance products that work great. I've used the HLF cleaner which works great and am interested in the DiaBrass protectant.
Cool. It's decent stuff to be sure. My old 79H really likes it. He threw in some tuning slide gel with the order that I have yet to try, but I'm sure it'll be just fine.