Yes, you need to use the hardener or it will not dry.
According to the tech sheet,the mixing ratio is 8 to 3 to 1.
8 parts color, 3 parts reducer & 1 part hardener.
You should be able to find the correct hardener & reducer at any autobody supplier who carries PPG products.
Last edited by JeffL; 05/27/2012 3:44 AM.
