FWIW if any of yaz remember "fuelman" he was working with Stan for a while, back...oh probably about a decade or so ago IIRC...with a "special oil"...
I am not 100% positive about this, and it's been a few years since I spoke w/ anyone down there in N.J. but I have a suspicion that "special oil" might be (or might have been) similar to that P O E type oil that the Europeans like to talk about, and we have a hard time getting???