Superior Products Dark Fury Wheel & Bug Cleaner is a professional-grade cleaner that quickly and safely removes stubborn road grime, brake dust, and bugs on tires and grills. This acid-free formulation is safe and effective on most exterior surfaces including clear coats, painted steel, and plastic. Dark Fury looks like motor oil when it is sprayed, but the “clinging” properties built-in allow the active ingredients to break down brake dust as well as dirt and bugs on tires and grills. It has also been found to be an excellent cleaner for highly polished stainless and aluminum tankers when diluted properly. The unique blend of wetting agents, emulsifiers, builders, and solvents work together to penetrate and remove tough dirt and road film. Dark Fury is very easy to use by spraying on the surface to be cleaned and power washing off. The use of a pressure washer really helps blow off the dirt and grime that Dark Fury has loosened from the surface. It is very mild on painted surfaces and metal. Dark Fury is an inhibited high pH cleaner made with special surfactants designed to prevent the high pH cleaner from pitting aluminum. Dilute Dark Fury 4:1 with water. Spray on and agitate with a brush or spray off with high-pressure water. It will not harm painted surfaces or factory aluminum wheels but be careful not to use it in uncoated polished aluminum wheels. Adjust dilution accordingly for best results.