FOR HOT DRY SLICK (SANDY OR DUSTY) TRACKS. WILL NOT DROP THE HARDNESS OF THE TIRE WHEN CHECKED AT ROOM TEMPERATURE. GREAT FOR DRY CLAY TRACKS THAT ARE HARD AND SANDY OR DUSTY. WORKS ON NATURAL OR SYNTHETIC RUBBER. WIPE DOWN TIRES WITH TRACK TAC ORANGE AND CLEAN TIRES WITH TRACK TAC BLUE WASH BETWEEN HEATS.