Description
Dike temporarily seals small leaks in coolant systems. A coolant leak repair job cannot be ignored! A leak in a coolant system can lead to serious problems, such as overheating or engine failure. Antifreeze that leaks into the engine can form sludge that can plug oil passages and cause engine parts to perform poorly. Even small amounts of antifreeze can reduce the lubricating ability of engine oils. Dike can be used as a preventative measure or as a solution to coolant system leaks.
Advanced formula seeks out and seals internal leaks, preventing antifreeze and water from seeping into the engine. Compatible with all standard and permanent radiator coolants (both green and orange) in cars, trucks, and water-cooled equipment. Keep Dike in your vehicle emergency kit for on-the-spot repairs or as a preventative measure for vehicles operating under severe conditions. Add 1 pint to every 4 gallons of coolant or water.
Directions for using this coolant leak repair called Dike:
Shake well before using. For cooling systems up to four gallons: pre-mix one pint of Dike to a minimum of one-gallon water/coolant mixture. Add this mixture of Dike, coolant and water to the radiator. Use caution as cooling systems are under pressure and may be hot. Replace radiator cap and run engine for at least 15 minutes. For cooling systems larger than four gallons, add four ounces of Dike for each additional gallon of coolants. Dike will not clog radiators or system components. If the cooling system is filtered, the filter should be removed or bypassed when using Dike.
Performance and savings for all your motoring needs:
Discover motor oils, fuel conditioners, transmission fluids, gear oils and greases that noticeably enhance the performance and greatly extend the life of your vehicles. Our innovative products significantly improve fuel and lubrication systems and continue to advance the private and commercial automotive care industry.
KEEP YOUR HARVESTING EQUIPMENT RUNNING SMOOTHLY!

As soon as you consider the huge investment farmers make in harvesting equipment, you realize these essential machines need protection. There are a number of Conklin lubrication products that are vital in keeping this equipment running smoothly all season. While your first thoughts may go to engine oils and fuel additives, other Conklin vehicle and lubrication products play an important role. Keeping your equipment performing at peak efficiency involves more than quality fuel and a clean fuel system. You need to make certain the cooling system is performing as expected to maintain proper operation temperatures. This is where Safe Radiator Coolant Conditioner and Dike Temporary Radiator Stop Leak come into play to keep your equipment running. Learn more about this in an informative blog post here.
Dike is manufactured by the Conklin Company & is owned by Charles Herbster. Charles is the Chief Executive Officer and took on the role of President and Chief Operating Officer upon his wife’s passing in May 2017. Conklin’s administrative offices are located in Kansas City, Missouri, and its manufacturing operations and distribution warehouse is in Shakopee, Minnesota. Conklin is one of few companies left today that is “farmer-owned.” Click here to learn more about Charles & his farming operation! Charles is proud of the products Conklin produces and sells right here in the United States of America!
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Thomas Hitchcox (verified owner) –
Absolutely the best radiator stop leak ever made. I seen a guy stick a jack knife in his radiator to prove how effective Dike is. It stopped the leak. It can also stop leaks in an open can with holes in it and not be under pressure. Amazing.