AT-205 Re-Seal additive from ATP stops seal leaks in your engine, transmission, differential, and hydraulic systems (except for the brakes). Petroleum distillate rubber conditioners can temporarily soften rubber seals and then turn them to mush over time, thus causing leaks. It's best to avoid those petroleum products and use ATP AT-205 Re-Seal additive instead. It's easy to use and works fast! Try it today and see for yourself.