IMPCO Technologies, Inc. IMCO announced today that it plans to start full-scale OEM production of the Eclipse heavy-duty natural gas engine management system in early 2001. Since 1997, Safeway stores and BOC truck fleets in the UK have been successfully using the Eclipse low emissions technology and now with more than 4,000,000 kilometers of service the system has provided fleet operators with significant fuel cost savings combined with the inherent clean burning advantages of natural gas and LNG engines.