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Clean & Cool Radiator Additive


Clean & Cool is a highly concentrated multi-functional supplemental coolant additive that is specially formulatedSchaeffer 258 Clean & Cool Anti-Freeze Additive for use in all conventional types of ethylene glycol based antifreeze mixtures used in diesel and gasoline engines.

Clean & Cool contains a highly concentrated additive package that contains a combination of molybdate, low nitrate corrosion inhibitor system, dispersants, surfactants, and synthetic organic polymers. When used at the recommended treatment levels this additive package allows Clean & Cool to provide the following performance benefits:

  • Prevention of the formation of rust, scale and iron corrosion deposits by the formation of a monomolecular film on all metal surfaces including aluminum.
  • Removal of existing rust, scale and iron corrosion deposits, while the engine is in operation.
  • Reduces the potential for overheating.
  • Prevention of galvanic corrosion caused by electrolysis.
  • Inhibition of corrosion to copper and its alloys due to the presence of a tolytriazole corrosion inhibitor.
  • Lubrication of water pumps and seals.
  • Prevention of the formation of green goo.
  • Elimination of coolant foaming by reducing the surface tension of the coolant. This reduces the potential for cavitation.
  • Neutralization of harmful acids that result as antifreeze chemically breaks down.
  • Prevention of the erosion of soft metals.
  • Improved efficiency and extended engine life.
  • Will not affect gaskets and hoses.
  • Non-toxic and non-corrosive in use concentration.
  • Will not support bacterial growth due to its low nitrate formulation.


One (1) pint of Clean & Cool to each eight (8) gallons of cooling system capacity. Clean & Cool can be added to any point in the cooling system and should be added to any point in the cooling system and should be added with each flush and in accordance to the following maintenance guidelines and testing guideline.

- Schaeffer #258 Clean & Cool Anti-Freeze Additive