TMC Proposes Color Guidelines

      The Technology and Maintenance Council of the American Trucking Assns. has proposed guidelines for standardizing the color of engine antifreeze/coolants.
      Coolants currently come in a rainbow of colors, including yellow, green, blue, pink and red. But TMC warns that you can't positively identify a traditional coolant from an ESI coolant by color alone.
      The TMC proposal also contains recommendations for a standard label format and location for identifying engine antifreeze/coolant used at factory fill and for aftermarket packaging.
      Under the proposal, conventional low-silicate antifreeze/coolant, designated TMC A, would be green. Fully formulated ethylene glycol antifreeze/coolant, or TMC B, would be purple/pink. Fully formulated propylene glycol antifreeze/coolant (TMC C) would be blue. Organic Acid Technology products (TMC D) would be red.
      Proposed labels would use these colors as well as the TMC letter designation, the description of the type of product, and the manufacturer. TMC also recommends that one-gallon containers, in addition to the labels, have color coded caps.