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Gunk

Motor Medic C1412 10-Minute Radiator Flush - 11 oz.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jun 17
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Features

  • MOTOR MEDIC is a local family owned company based out of Charlotte, NC. For more than 75 years, LIQUID WRENCH products, developed by the people who use them, has earned the trust of hard-working tradesment and the active DIYer through consistent, superior performance and a commitment to innovation.MOTOR MEDIC

Description

Gunk 10 Minute Radiator Flush quickly removes grease, scum, rust and scale. It is a fast, one step product that requires no neutralizer and contains no acids. This radiator flush is compatible with all cooling systems.

Manufacturer: ‎Niteo Products


Brand: ‎Gunk


Item Weight: ‎13 ounces


Product Dimensions: ‎2.72 x 2.72 x 5.69 inches


Item model number: ‎C1412


Manufacturer Part Number: ‎C1412


Voltage: ‎12 Volts


Date First Available: July 26, 2005


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Great product. Worked well in my minivan with long rear heater lines
Size: One Each, 11 oz.
Worked great. I followed up with two more water-flush and drain cycles, as there was a lot of rust in my radiator and the long lines that ran to my minivans rear heater. But it really seemed to break things up nicely and did not affect any seal issues.
Reviewed in the United States on April 10, 2026 by Radioface Voiceovers Ebiker
    • Works as expected
Size: One Each, 11 oz.
Seemed to wash out the extra gunk out of the system for me. When the old fluid came out seemed to be more discolored, hopefully that means it worked.
Reviewed in the United States on January 26, 2026 by Dean
    • Excellent Product!
Size: One Each, 11 oz.
Excellent product. Works extremely well!
Reviewed in the United States on March 25, 2026 by Joe Randez
    • Keeps them clean.
Size: One Each, 11 oz.
This stuff worked when I was 16 working on old beaters and works today on my old ride I have had for 50 years.
Reviewed in the United States on December 21, 2025 by Bluebird
    • Just as described
Size: One Each, 11 oz.
I liked it but you could just save some money by using vinegar
Reviewed in the United States on July 2, 2017 by Gjass
    • A flush is a flush
Size: One Each, 11 oz.
Doesn't work as good as the old acid flush formula but those days are long gone.
Reviewed in the United States on August 7, 2025 by Auto Teach
    • !
Size: One Each, 11 oz.
Works
Reviewed in the United States on March 19, 2026 by Tawnie crain
    • when used in a conscientiously applied program.....
Size: One Each, 11 oz.
GUNK uses some pretty potent chemicals, and for a product to efficiently clean a system in 10 minutes, that has accumulated over years, makes you wonder if it could be a little too harsh on weak and sensitive parts of the cooling system. But, for what I used it for, it worked just Great. I first drained my cooling system, completely (with the heater control on, to also drain the heater core). Filled it with water, ran until it reached operating temperature, drained it, added a quart of Prestone Flush and topped off with water. Ran for a few days, then drained again, filled with just water, heated up and drained. Then, I put in the 10-Minute Radiator Flush, topped with water, and ran it 10 minutes(+-), then drained, filled with water, ran, drained..... repeated until clear. I installed a back-flush T connection in the outlet heater hose and did a final flush. I pulled the thermostat inlet housing to replace the thermostat. The inner manifold was almost shiny clean, as was the internal radiator core. ... show more
Reviewed in the United States on July 28, 2017 by William S

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