This Thread is going to get interesting quick, I've always wanted to make Keiths Special Blend as well Jim, just never got around to it yet.
I know GearHead Jed has made up a batch.
There's not much that Keith doesn't know about steam engines and machining. He mentions the concoction in nearly everyone of his videos and has used it for years and years and one I watched the other night he told about the expert that gave him the information.