80 is about the hottest it got in the shop on a couple of different shoots. This clear lays out nice. The color has good coverage too. The primer is some thick shtuff. 4:1:1 for primer and 4:1:2 makes it a really smooth sealer and uses the same hardner as the clear. The clear is 2:1 with 10% reducer. Kinda different and real short window to topcoat. 3 hours on the sealer and no more than 8 for the color so your pretty commited when you pull the trigger on the sealer or ya gotta re-sand.