Oil stop leak and conditioner Helps prevent electrolysis Protects the entire cooling system Keeps engine oil seals soft and pliable Helps stop leaks due to drying, hardening, or shrinking of engine oil seals and gaskets Leaks usually stop within 100 miles or 2 to 3 days of driving Mixes with all factory approved engine oils including synthetics Non-corrosive, non-clogging, and non-foaming 12 oz