30 years ago I used a gallon and a half of Deltron painting one and just had enough. Painted interior and exterior the same color, painted all door jambs, etc. May have had half a pint left at the end. For what it is worth, that paint shot nicely and held up well and I'd use it again. 22 years ago I painted a 1957 Chevy 2 dr hardtop. Bottom red, top white. Used one gallon on bottom, one quart on top. Catalyzed urethane.