CLR PRO® Regular Maintenance Radiator Flush and Cleaner

Prevents scale and rust build up to keep radiators clean and running efficiently in new vehicles. It removes more scale in 10 minutes than competitive products do in 30 minutes*.

  • Helps prevent build up from occurring with regular use
  • Removes 5X more scale than the leading product*
  • Readily biodegradable

Available in 24 oz, 1 gallon, and 5 gallon sizes.

*Proven in third-party tests, Based on 30 minute flush with average 3 gallon radiator.
 
Where to Buy
How To Use
SDS
Tech Data Sheets
Product Sell Sheets
Ingredients
  1. With engine cool, drain the cooling system. Properly dispose of coolant.
  2. Pour CLR PRO® Regular Maintenance Radiator Flush & Cleaner into the radiator and fill remainder with water. Use 24 ounces for every 3 gallons of cooling system capacity.
  3. Turn heat to high inside car to allow cleaner to flush the heater core. If heater core is clogged, use CLR PRO® Heavy Duty Radiator Flush & Cleaner.
  4. Run engine at normal operating temperature for 10-30 minutes. Do not exceed 2½ hours at any point during cleaning.
  5. Allow engine to cool. Drain cooling system and flush with water until clear.
  6. Drain system and refill with appropriate coolant mixture.
  7. Dispose of coolant in accordance with local and national regulations. Never open a radiator cap when engine is hot.

Download Safety Data Sheet

Download Safety Data Sheet

Ingredients

Water
Dilutent: CAS #7732-18-5. Reverse Osmosis (RO) is a water treatment process that removes contaminants from water by passing the water through a membrane, (filter), where contaminants are filtered out yielding more pure quality water.
Lactic Acid
Chelating Agent: CAS #79-33-4. Lactic acid is found in many yogurts and cheeses.  It is also produced in the muscles during intense activity.  Commercially, it is produced by fermentation of simple sugars.  In cleaning producs it functions as a chelating agent; a compound that makes metals more soluble in water.  As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients
Lauramine Oxide
Surfactant: CAS #1643-20-5. Used in cleaners to modify the surface tension of water, to aid in even spreading and to allow mixing with oil and dirt so that they can be rinsed away; it is included in many soaps, detergents, and several groups of antiseptics. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.
Gluconic Acid
Chelating Agent: CAS #526-95-4. This ingredient is an acid formed from the sugar glucose, which naturally occurs in fruit, honey and wine. It is a chelating agent; a compound that makes metals more soluble in water. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.
Tripropylene Glycol n-Butyl Ether
Solvent: CAS #55934-93-5. Used to slow down the evaporation of many liquid products including oven cleaners and inks for ball-point and felt-tip pens. It is very effective at absorbing organic material. As part of the EPA Safer Choice Program, it has been evaluated and determined to be safer than traditional chemical ingredients.

California CPRKA Designated Lists 
(12) US NTP Reproductive or Developmental Toxicants.  https://ntp.niehs.nih.gov/publications/monographs/index.html 
(16) California NLs.  https://oehha.ca.gov/water/notification-levels-chemicals-drinking-water
(18) California TACs.  https://ww3.arb.ca.gov/toxics/id/taclist.htm
(20) California Non-Cancer Hazards. https://oehha.ca.gov/air/general-info/oehha-acute-8-hour-and-chronic-reference-exposure-level-rel-summary


 
CLR PRO® Regular Maintenance Radiator Flush & Cleaner TDS
CLR PRO® Regular Maintenance Radiator Flush & Cleaner Product Information Sheet