By injecting the correct concentration of ozone into the coolant, the growth of bacteria and mold will be eliminated. The strong oxidizing capability of ozone means that coolant sump odors can be controlled for mere pennies a day. The OZO-BAC system is also capable of treating water, soluble oils, semi-synthetics, synthetics, and alkaline cleaners. Ozone is the most potent way to oxidize bacteria, viruses, cysts, spores, hydrogen sulfate (bad egg odor), and contaminants in water. Once the coolant is treated, the excess ozone decomposes back to oxygen.