INDUSTRIAL STREAKING GRIME (35 mL)Rail Center Streaking Effects. 35 ml Jars The perfect colour to create dirt effects drained on surfaces of vehicles and industrial machinery. Also useful for many other effects such as adding chromatic richness to any piece or surface. Apply a few lines from the top of a panel and blur the streaks with a clean brush moistened in AMMO. R 2500 ENAMEL ODOURLESS THINNER.