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Your cart is empty.Kool-It Radiator Flush is formulated with additives that circulate through the cooling system to remove scale, loosen rust, mineral deposits and combustion by-products from the coolant system and radiator of a car or truck. Radiators use coolants primarily containing anti-freeze & water. Water contains minerals that form deposits over time on the metal surfaces of your cooling system and radiator. These deposits will reduce the heat transfer rate (which can cause overheating), the deposits also can cause corrosion of the coolant system components and reduce the efficiency and life of the anti-freeze. The longer you drive your vehicle without flushing the radiator and replacing the coolant, the more likely that cooling system problems will arise. Extreme driving conditions, such as; operation in hot climates, extended service intervals, stop and go driving, operation in mountainous areas, speeds above 65 mph, towing, etc., increases the chances of harmful deposit formation in the cooling system. DIRECTIONS FOR USE: When used with a flush machine - Follow the manufacturers' instructions. Without a flush machine - CAUTION: Never remove radiator cap if engine is still hot. With engine cool, open radiator drain petcock valve and drain the fluid from the system into a proper container. Close radiator drain petcock valve. Add KOOL-IT Radiator Flush to cooling system and fill with water. Replace radiator cap. Start engine, turn heat on high, and run for 10 minutes. Stop the engine and allow to cool. Remove radiator cap. Open radiator drain petcock valve. Drain water as before. Refill with water and replace radiator cap. Run the engine for 5 minutes, allow engine to cool. Open radiator drain petcock valve. Drain water as before. Refill with water. Replace radiator cap. Start and run engine for 5 minutes. Stop engine. Allow engine to cool. Remove radiator cap. Open radiator drain petcock valve. Drain water as before. Fill radiator with recommended anti-freeze and water mixture. Replace radiator cap. For best results, always add KOOL-IT Supreme Coolant Treatment (#96001) after flushing the system.
Jesus Rosales
Reviewed in the United States on February 15, 2024
Patrick
Reviewed in Canada on April 11, 2021
Did it on an r6 it seems too clean it out
debushau
Reviewed in the United States on July 26, 2016
It's kind of hard to judge radiator flush. I used it before putting in Kool-It coolant additive. Frankly, it's quite a bit more expensive than the Prestone and Zerex stuff that you can buy locally. Lubegard stuff is decent, the bottle and color is nice!
jmolsberg
Reviewed in the United States on February 17, 2013
1983 Mercedes 240d. purchased Kool-it, appropriate coolant/ distilled h20, new radiator cap, and thermostat. the process takes nearly a half day. drain old coolant from radiator and engine block, you must drain the block in order to get all the old coolant out. close all drains add water and Kool-it to the radiator and go for a 20 minute drive with heat on HIGH. drain radiator/block again, at this point you will be able to tell how dirty things are based on what comes out. close it all up again add water and run auto for 10 minutes, again with the heat on. drain.. add water run for 10 minutes and drain, if no more bubbles are present the system is free of Kool-it. change thermostat, make sure all plugs are closed, add appropriate ratio coolant /distilled and start the car, turn heat on high, begin to check for leaks. monitor coolant level and add as necessary as the system burps itself, it's kinda like a baby. when heat is coming in full force through the dash the system is burped and the job is done. i speeded things up by removing the old thermostat to begin with.
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