I bought a 1 part paint from a guy in Long Isl NY about $99 agal needed 2 gals. He called braging that this stuff was the best on the planet. I used it on an old floor yes with
oil stains. He had prep instructions wash and etch. Well I did that but 4 or 5 times. I etched and etched till i got no more gray fizzing. Then did it again. No problem looks great. The only problem is the tires stained the paint alittle when & where I first parked the cars. Maybe I needed to let it cure longer.