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CLR PRO Automotive Heavy Duty Radiator Flush & Cleaner (Pack of 4)

$85.78

Formulated to remove heavy scale buildup and rust in later model radiators.  It removes more scale in 10 minutes than competitive products do in 3 hours*. 

  • Heavy duty to extend the life of vehicles.
  • Removes 10x more scale buildup than the leading product*.
  • Contains no phosphates, ammonia or bleach.
  • Safe for employees.

*Proven in third-party tests. Based on 30 minute flush with average 3 gallon radiator

Available In: 4 Pack of 1 GAL

CLR PRO Heavy Duty Radiator Flush and Cleaner Safety Data Sheet
CLR PRO Heavy Duty Radiator Flush and Cleaner Spanish Safety Data Sheet
CLR PRO Heavy Duty Radiator Flush and Cleaner Tech Data Sheet
CLR PRO Heavy Duty Radiator Flush and Cleaner Product Catalog

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How to use this product

  1. With engine cool, drain the cooling system.
  2. Pour solution into the radiator and fill remainder with water.
  3. Use 24oz for every 3 gal. of cooling system capacity.
  4. Turn heat to high inside car to flush the heater core.
  5. Run engine at normal operating termpature for 10-30 minutes.
  6. Allow engine to cool. Drain and flush with water until clear.
  7. Drain system and refill with appropriate coolant mixture.

Do not exceed 2.5 hours at any point during cleaning. Dispose of coolant in accordance with local and national regulations. Never open a radiator cap when engine is hot.

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Product Ingredients

Water Dilutent: CAS #7732-18-5
Lactic Acid Chelating Agent: CAS #79-33-4.
Gluconic Acid Chelating Agent: CAS #526-95-4.
Lauramine Oxide Surfactant: CAS #1643-20-5.
Tripropylene Glycol n-Butyl Ether Solvent: CAS #55934-93-5.
Yellow No. 5 Colorent: CAS #1934-21-0.
FD&C Blue No. 1 Colorent: CAS #3844-45-9.
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