VM&P is an abbreviation, very often used on the can, that stands for, <span style="font-weight: bold"><span style="text-decoration: underline">V</span></span>arnish <span style="font-weight: bold"><span style="text-decoration: underline">M</span></span>akers' <span style="font-weight: bold"><span style="text-decoration: underline">&</span></span> <span style="font-weight: bold"><span style="text-decoration: underline">P</span></span>ainters' naptha. Sometimes it just says "naptha."
Sometime this winter, while visiting the motherland (San Francisco), I went to the local hardware store to get some naptha for a gunk-removal at my folks' house. They didn't have it and gave me some cock-and-bull story about smog. A totally believable story in CA. Since I haven't lived there in 20 years, I couldn't say, but, I believed him. Maybe you have to go to the actual paint store to get it now, or something, but Papenhausen Hardware said they could no longer sell it...
Lighter fluid (aka Ronsonol): That's right. I tell my guitar customers that, if they don't want a whole quart of it from the hardware store, they should go to the smoke shop and get a can of Ronsonol. A "guitar-owner" quantity in the handy flip-nozzle can. Same stuff. Anyone planning a tonneau or top cleaning, is best advised to get the hardware/paint store quantity (and price). One can of Ronsonol -- even the big one -- won't get it.