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Dyna-Plex 21C products are in demand for on- and off-road fleets and equipment, industrial equipment, and metalworking and cutting applications. If you have a specific question or area of interest, the Dyna-Plex 21C team at PetroChoice, Inc. is ready to help. 

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Antifreeze & Coolants Product Header Image Antifreeze & Coolants Product Header Image

Antifreeze & Coolants

Dyna-Plex 21C® antifreezes and coolants provide long-lasting protection of heavy duty cooling systems.

Trust the Dyna-Plex 21C line of coolants and antifreezes for maximum durability in heavy-duty and diesel applications, preventing metallic corrosion and erosion.

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Dyna-Plex 21C SCA Pre-Charged

Dyna-Plex 21C SCA Pre-Charged

Heavy-Duty On-Road, Heavy-Duty Off-Road
Heavy-Duty On-Road, Heavy-Duty Off-Road
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Dyna-Plex 21C Extended Drain Antifreeze/Engine Coolant

Dyna-Plex 21C Extended Drain Antifreeze/Engine Coolant

Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Extended Drain Antifreeze/Engine Coolant is a premium quality ethylene glycol based product. It is pre-diluted to a 50/50 mixture with deionized water to provide excellent corrosion control and a reduction of scale buildup. The corrosion inhibitor package eliminates the need for an initial charge of supplemental coolant additive (SCA). The 50/50 dilution with deionized water insures high water quality and the chance for error when mixing antifreeze with water in the field.

  • Maximum protection and performance available for heavy duty diesel applications
  • Eliminates potential waterrelated problems and offers ready-to-use convenience
  • Includes the highest quality inhibitor package available
  • Meets or exceeds manufacturer specifications for use in heavyduty diesel and automotive applications
Heavy-Duty On-Road, Heavy-Duty Off-Road

Dyna-Plex 21C Extended Drain Antifreeze/Engine Coolant is a premium quality ethylene glycol based product. It is pre-diluted to a 50/50 mixture with deionized water to provide excellent corrosion control and a reduction of scale buildup. The corrosion inhibitor package eliminates the need for an initial charge of supplemental coolant additive (SCA). The 50/50 dilution with deionized water insures high water quality and the chance for error when mixing antifreeze with water in the field.

  • Maximum protection and performance available for heavy duty diesel applications
  • Eliminates potential waterrelated problems and offers ready-to-use convenience
  • Includes the highest quality inhibitor package available
  • Meets or exceeds manufacturer specifications for use in heavyduty diesel and automotive applications
Extended Drain Anti-freeze and Engine Coolant