Recycled engine coolants, also known as antifreeze, might actually be purer than virgin coolant because the recycling process reduces the chlorides that come from hard water. Testing shows that, like new coolant, recycled coolant meets nationally recognized performance specifications established by the American Society for Testing Materials (ASTM) and the Society of Automotive Engineers (SAE).
- EPA recommends that procuring agencies whose vehicles are serviced by a motor pool or vehicle maintenance facility establish a program for engine coolant reclamation and reuse that consists of either reclaiming the spent engine coolants onsite for use in the agencies' vehicles or establishing a service contract for reclamation of the agencies' spent engine coolant for use in the agencies' vehicles.
- EPA also recommends that procuring agencies request reclaimed engine coolant when having their vehicles serviced at commercial service centers. Additionally, EPA recommends that agencies purchase reclaimed engine coolant when making direct purchases of this item, such as when necessary to make up for losses due to leakage or spillage.
- EPA does not recommend one type of engine coolant over another. EPA recommends, however, that procuring agencies purchase engine coolant containing only one base chemical, typically ethylene glycol or propylene glycol, to prevent the commingling of incompatible types of engine coolant.
of Manufacturers and Suppliers
This database identifies manufacturers and suppliers of recycled engine coolants and recycling and recovery units.
DLA Environmental Products
This is a list of environmental products offered by the U.S. Defense Logistics Agency, including recycled engine coolants.
Buy-Recycled Series: Vehicular Products (PDF) (8 pp, 129K, About PDF)
This fact sheet highlights the vehicular products designated in the CPG, including recycled engine coolants, and includes case studies, recommended recovered content levels, and a list of resources.
Technical Background Documents
These background documents include EPA's product research on recycled engine coolant as well as a more detailed overview of the history and regulatory requirements of the CPG process.