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

Engine Oil Additives and Motor Flushes Treat Symptoms and Help Improve Performance. Check out these GUNK® Valve Medic™ Oil Detergent with Sludge-Guard that quiets valve lifters and cuts harmful build-up. And look over Stop Smokin', Bearin'Seal, and Engine Oil Stop Leak. Give some consideration to Motor Flush. It removes gum and sludge, frees sticking valve lifters, & piston rings in 5 minutes. Click for more information on engine oil additives.

 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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