Check out the API code rating on the top of the can or on the bottle label. Check that rating against the requirement for any car you are thinking of using it in. The required rating will be in the owner's manual, or you can usually find it on-line.
Just finished mine today. It was a lot easier than I expected, and turned out great. I used the color kit with flakes and covered it with the clear finish. My fiends told me the clear adds years to the durability. We'll see about the durability, but it sure looks rockin'. It took exactly 3...