Ed Huntress wrote:

(...)

I bought some just a few years ago at Home Depot. I'd also try a big paint
store. Have you looked for Coleman Fuel at a chain sporting goods store?
Target has it here.

Apparently, it just evaporated locally.
My local sporting goods store lists only shoes, sleeping bags
and LED lanterns under the 'Coleman' brand. Perhaps
it is worth a drive out there for some face time.

I get nothing but 'deer in the headlights' looks when I ask about
'naptha' at the same darned stores where I used to buy gallons of
the stuff for ~$7.00 then ~$9.00 then ~ $14.95.
Even the Pro paint store clerks now act like they never sold the
stuff! What the heck?

However, as a solvent, it's pretty close to gasoline.

Purple cleaner, oven cleaner, gasoline are next to try.

Thanks, Ed.

--Winston