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

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Be kind to your metals with cutting-edge machining and grinding fluids. Our Truegard oil and Shell oil products will prolong the life of your machinery so that you can cut costs and improve production. Plus, Keller-Heartt proudly offers free shipping on every order, big or small.

Free Resource

Stop Guessing Which Metalworking Fluid You Need

The Truegard Metalworking Fluid Cross-Reference Guide makes it easy to find the right cutting fluid, coolant, or lubricant for your machine — matched by competitor brand, viscosity grade, or application type. Trusted by machinists and procurement managers across the U.S. since 1929.

  • Cross-reference by competitor brand name
  • Find Truegard equivalents for 100+ fluids
  • Covers cutting oils, coolants, semi-synthetics & synthetics
  • Free PDF download, no account required
Download the Free Guide →

PDF download • Keller-Heartt Oil Co. • Family-Owned Since 1929