Black Streak - Advanced Foaming Black Streak Cleaner. 3X:Chemistry Black Streak is a thick foaming, multi-purpose cleaner that neutralizes and lifts road grime, black streaks, stains, bug remains, and other tough soils. The powerful heavy-duty formula clings to surfaces longer for deeper penetration and quick, effective cleaning. Safe for use on gel-coat, fiberglass, metal, aluminum, painted surfaces, and decals. Specially formulated for RV and Marine cleaning, Black Streak is ready to use right out of the bottle. The environmentally safe, biodegradable solution to keeping your RV streak-free. Contains no harsh chemicals.