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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) FreedomCAR and Vehicle Technologies Program. 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.

The following documents are available as Adobe Acrobat PDFs. Download Adobe Reader.

  • Oil Bypass Filter Technology Evaluation
    • Final Report - March 2006 ((PDF 1.5 MB)
    • Eleventh Quarterly Report April - June 2005 (PDF 431 KB)
    • Tenth Quarterly Report January - March 2005 (PDF 511 KB)
    • Ninth Quarterly Report October - December 2004 (PDF 561 KB)
    • Eighth Quarterly Report July - September 2004 (PDF 317 KB)
    • Seventh Quarterly Report April - June 2004 (PDF 460 KB)
    • Sixth Quarterly Report January - March 2004 (PDF 540 KB)
    • Fifth Quarterly Report October - December 2003 (PDF 488 KB)
    • Fourth Quarterly Report July - Sept 2003 (PDF 328 KB)
    • Third Quarterly Report April - June 2003 (PDF 445 KB)
    • Second Quarterly Report January - March 2003 (PDF 336 KB)
    • First Quarterly Report October - December 2002 (PDF 1.2 MB)
  • Demonstrated Petroleum Reduction Using Oil Bypass Filter Technology on Heavy- and Light-Duty Vehicles - Presentation (PDF 977 KB)
  • Oil Bypass Filter and Diesel Engine Idling Wear-Rate Evaluations - Poster (PDF 246 KB)