Looking on the TCP website the thinner listed under acrylic enamel auto paints is urethane reducer (see link below). New to this so question is is urethane reducer the same thing or a suitable substitute for acrylic enamel reducer? (I already have urethane reducer). I would of guessed no, but can't understand why they only list urethane reducer under their acrylic enamel associated products.

http://www.tcpglobal.com/restorationshop/rspacrylic.aspx