National rule Urethane paint reducer/thinner. Mix .9:1 or 1:1 with 1K automotive basecoats.
Spectral Paints Urethane Reducer - Standard (<77 F)
Sweet Patina SP-82 Urethane Reducer, Thins Urethane-Based Paints & Coatings
Rust Converter Primer by Spectral Paints
Adhesion Promoter for Plastic Bumpers & Mirrors & Trim by Spectral Paints
Spectral Paints Clear Coat with UV Protection 12 oz Spray
Primer by Spectral Paints