PG usp is always available if you have a local tractor supply store, around $20/gallon; I've been using it for 9 years with no complaints. VG usp I get off Amazon, about the same price; last couple of orders I've picked up the Nature's Oil USP Vegetable Glycerine, again no complaints.Any sales for PG, VG going on currently? I missed ecx's yesterday.![]()
(Don't sweat the "Oil" - it's just the brand name)