Anyone else using the Optilube summer blend? I've been using it for a couple years now. Love the stuff. It scored #4 in the study and was by far the cheapest per tank full to use, of the top 4. Can't believe I don't hear more about it on here. I like stanadyne, but its a lot more expensive and doesn't lubricate as well. I do use it in the winter though for gelling protection.