Product inhibits the formation or rust and scale, neutralize pH imbalance, controls electrolysis, lubricates and seals internal, external and coolant-to-oil leaks. The powder uses the same active ingredients as the liquid, but is available in a dry form in an easy to use tube. Bars Leaks Stop Leak and Conditioner is compatible with both conventional green (silicate based) and extended life red/orange or yellow (OAT) antifreeze. For most vehicles leaks stop in only a few minutes.