Michelle P wrote:

The paint is Martin Senour Automotive paint, Maule White.....(cream)

Go back to where you got that and buy the thinner for it. Auto paint comes in a
variety of formulae and it's best to buy thinner made for that paint by the same
manufacturer. Depending on the formula, you may also need a hardener for it.

For the usual oil based paints used on home projects, mineral spirits is better
than naptha. MS has an oilier formula. For this reason, naptha makes a better
cleaner.

George Patterson
"Naked" means you ain't got no clothes on; "nekkid" means you ain't got
no clothes on - and are up to somethin'.