Skip to Content
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
  • SAE 50 is a straight (monograde) viscosity grade, meaning it does not cover a low-temperature range like a multi-grade oil would. Straight-weight SAE 50 oils are typically specified for older or heavy-duty engines, certain diesel applications, and equipment where the manufacturer explicitly calls for a high-viscosity monograde oil rather than a multi-grade alternative.

  • The T04 designation refers to a specific performance specification or classification tied to this oil's additive chemistry and approved applications. Confirming that this designation matches your equipment manufacturer's requirements is important before use, as using an oil with the wrong specification can affect transmission or engine performance and warranty coverage.

  • The product is sold in a pail container, which is a bulk packaging format typically used by fleet operators, shops, or facilities with ongoing high-volume oil needs. For exact pail volume or weight, please confirm with the vendor, as this is not specified in the available product data.