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For Over 80 Years, Radiator Specialty Company products help make things work better.                              

We have Starting, Charging, Electrical treatments... and more! Cold Canadian Winters are treated with respect by GUNK. We offer two strengths of starting fluid including the famous Liquid Fire, Belt Conditioner, Mass Air Flow Sensor Cleaner, Electric Motor Contact Cleaner, Carb-Medic® contact cleaner, Throttle-Medic® Air Intake Cleaner & Lubricant, Wire Dryer, Battery Terminal Cleaner, and Acra-Seal Ignition Seal. GUNK offers this range of basic tools for charging and electrical systems for on-road and off-road vehicles and equipment. Browse all products

 Canada's First Choice for Performance Additives 

In 1931, Radiator Specialty Co. of Canada was formed to serve the Canadian Market.
Today, we have grown into a diversified manufacturer of a full line of specialty automotive products, that is highly responsive to the varied needs of Canadians from coast to coast. 
We make over 300 automotive products under many well-known and well-respected names, including Solder Seal®, Gunk®, Liquid Wrench®, Engine Brite®, Puncture Seal™ and Tite Seal™ to name a few.

Our first product, Solder Seal® Powder Radiator Repair, was the original heavy duty Radiator Stop Leak. It began a long legacy of superior automotive products that now include Tire Sealers, Lubricants and Penetrants, Degreasers, Fuel Treatments and Additives, Functional Fluids and Cleaners, as well as many other specialty chemicals, kits, and Point-of-Sale displays, designed for the growing Canadian retail market.

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