Century Transfer Fluid is ideal for use in RV floor heating systems as well as solar, hydronic and HVAC units. The ingredients in this product are "generally recognized as safe" (GRAS) by the United States government, and offer the following benefits: high boiling point, stability over a wide temperature range, high specific heat and thermal conductivity, extremely low toxicity, non-corrosive. It is designed to be used at full strength; do not dilute. Follow system manufacturer's recommendation for initial introduction of transfer fluid.