Never used it. PS55 according to the Tamiya site.
http://www.tamiya.com/english/produc...lear/index.htm
I have used Matt Clear you put through a spray gun though, apply light coats (I would always recommend keying the surface up, obviously you'll have to mask the windows so they stay shiny). When I tried it first I put too much on and it went sort of semi gloss
so I had to reflat it and then just put on a very gentle coat, one was plenty and it went properly matt.
Not sure how it will stand up to RC racing ?