Since the late 1980's, the market for recycled engine coolant has grown and evolved to meet changing forces in the light-duty and automotive sector. Various recycling technologies and service programs have emerged to serve this market. However, end-user (service/repair facilities) needs are also changing as a result of increased focus on profitability and the emergence of new vehicle service equipment. What started as a do-it-yourself market is evolving into a “do-it-for-me” market with bottom line costs often dictating which programs and recycling technologies succeed.This technical paper will summarize the trends of the light-duty engine coolant recycling industry and present a leading technology that is changing with the times to better serve customer needs. Also discussed is a tiered bulk engine coolant recycling program that produces recycled engine coolant at various economical levels and provides on-site engine coolant recycling service to vehicle repair facilities. Due to the unique requirements for heavy-duty engine coolants, this technical paper does not attempt to address heavy-duty engine coolant recycling.