Bar’s Leaks Original Rhizex Pelletized Formula Heavy Duty Stop Leak is specially formulated to seal larger leaks better than other stop leak products. Works safely and effectively on plastic, aluminum and metal radiators, heater cores, blocks, heads, gaskets and freeze plugs. Water Pump Lube lubricates water pump seal and inhibits the formation of rust and scale. Compatible with both conventional green or blue (silicate based) and extended life red/orange or yellow (OAT/HOAT) antifreeze. 

Features

• Protects Entire Cooling System
• Stops Current & Future Leaks
• Inhibits Rust & Corrosion
• Lubricates Water Pump Seal
• Helps Control Electrolysis