WHITE LIGHTNING this truck wash detergent is also a "safe finish cleaner". It is designed with 50% more cleaners than Blue Lightning to clean over the road tractor/trailers and other types of commercial vehicles. It will clean painted surfaces, polished aluminum, anodized aluminum, & chrome without damage. This product will remove carbon stack stain and magnetic road film from trailers without brushing. It will work in cold water as well as hot water, rinses at any temperature. This product may be metered at 1:70 for hot water or 1:35 for cold water, and should be effective in hard water to about 20 grains of hardness.