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Keller-Heartt has Truegard Propylene Glycol Heat Transfer Fluids in both Inhibited and Food Grade! Order Today!
Propylene Glycol Available. Order Today!

Frequently asked questions

Find answers to common questions about our products and services
  • Yes, this is a concentrate formulation and must be mixed with water before use. The correct dilution ratio and mixing instructions are specified in the Technical Data Sheet.

Key Features

  • Extended Life Coolant (ELC) formulation engineered for prolonged coolant service life beyond conventional antifreeze products.

  • Nitrite-Free (NF) formula contains no nitrite-based corrosion inhibitors, making it suitable for systems where nitrites are not desired.

  • Sold as a concentrate that must be diluted with water prior to use, giving flexibility in mixing ratios for specific application needs.

  • Available in a 55-gallon drum format, ideal for fleet operations and high-volume coolant requirements.

  • A Shell Rotella brand product, part of a trusted lineup of heavy-duty fluids and lubricants.