Hey, Rob, welcome back. Can't tell from the web site, but it looks like it might be petroleum based, which makes it questionable for interior use on springers. I just replaced the spring and piston seal in my HW 77, used Macarri lubes throughout, moly for the seal and metal to metal areas, and a couple of different tars on the spring and guide. Should be good for 10,000 shots or so, from what I've been able to find out. I need to get a silicone cloth to wipe down the exterior, though. Hope this helps.
Dave