Darn reducer..... Where I live VOC compliance is a pain and last time I went to buy clear, they legally could not sell me a compliant reducer for the PPG DCD25 - and we can't get the 2020 clear(good stuff) either. I shot one plane with no reducer. What a pain! But, I sprayed one yesterday using the regular PPG base coat reducer. I didn't know if it would work but seems to be fine (clear isn't peeling yet <g>). I too have found that reducing the clear quite a bit is necessary to get good results. The clear seems to dry a lot faster on the surface than base coats and is tackier, making thinning necessary to shoot it well.

I shot this PPG clear (on the below pic) over Sickens (Mercedez Benz paint ) and it worked well... The clear was reduced about 75- 100% (I know, it's not a jet - one's coming soon though...)

-Michael