Bar’s Leaks Heavy Duty Radiator Stop Leak, the original pelletized formula that has protected hundreds of millions of vehicles worldwide since 1947, solves most common cooling system problems, sealing internal, external and coolant-to-oil leaks in radiators, freeze plugs, gaskets, heads, blocks and heater cores, the maker said. It is specially formulated to seal larger leaks better than other stop leak products, the company added.
The heavy-duty product (p/n PLT11) features Rhizex pellets that dissolve in minutes to seal cooling system leaks. The maker said it also conditions the cooling system, inhibiting rust and corrosion, lubricating water pump seals and helping to control electrolysis, all of which reduce the risk of engine failure due to overheating or poor lubrication.
Bar’s Products said the product is compatible with all brands of antifreeze, including conventional green or blue (silicate-based) and extended life red/orange or yellow (OAT/HOAT) coolant. It works safely and effectively on plastic, aluminum and metal radiators, heater cores, blocks, heads, gaskets and freeze plugs, according to the maker.
The product is available to distribution in case packs of six bottles (one 11 oz. bottle for 6-, 8- or 10-cylinder gasoline or diesel engines; half a bottle for 4-cylinder engines). Each bottle treats systems up to four gallons.