Oil Bypass Filter Testing Reports

These reports detail the ongoing fleet evaluation of oil bypass filter technologies by the Idaho National Laboratory (INL) for the U.S. Department of Energy's (DOE's) Vehicle Technologies Office. Eleven full-size, four-cycle diesel-engine buses used to transport INL employees on various routes have been equipped with oil bypass filter systems from PuraDYN Filter Technologies (eight buses) and Refined Global Solutions (three buses). Six gasoline-equipped Tahoes are also equipped with PuraDYN systems. The 17 test vehicles have accumulated more than 800,000 test miles to date.

Because of the reported filtering (down to 0.1 micron) capability of bypass filter systems, the technology is intended to extend oil-drain intervals and reduce engine wear. To validate the extended usability of the oil, an oil analysis regime is used to monitor the presence of necessary additives in the oil, detect undesirable contaminants and engine wear metals, and evaluate the fitness of the oil for continued service. Extended engine oil use supports DOE's goal of energy security.