As the second phase of a program to evaluate methods of extending the life of engine oils, an agreement was reached with Thompson-Ramo-Woolridge, Inc. (TRW) to evaluate an experimental low-blowby piston ring assembly in an L-141 engine. The rings were initially evaluated using an engine dynamometer and were then installed in an M-151 Military Utility Tactical Truck (MUTT) for an extended road evaluation. All tests were conducted using a qualified MIL-L-2104C/MIL-L-46152 grade 30 lubricant and unleaded gasoline meeting VV-G-001690A specifications. From the results of the 35,400-km (22,000-mile) road evaluation, it appears that these low-blowby piston rings, in conjunction with high-quality level MIL-L-2104C/MIL-L-46152 qualified oils, would allow no-drain operation for its 32,000-km (20,000-mile) lifetime of the M-151 vehicle when operated in a high-mileage accumulation, high-temperature model. (Author)

  • Supplemental Notes:
    • See HRIS 092790 for additional information
  • Corporate Authors:

    Southwest Research Institute

    Army Fuels and Lubricants Research Laboratory
    San Antonio, TX  United States  78284
  • Authors:
    • OWENS, E C
    • LESTZ, S J
    • Quillian, RDJ
  • Publication Date: 1975-10

Media Info

  • Pagination: 150 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00136558
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: AFLRL-72
  • Contract Numbers: DAAK02-73-C-0221
  • Files: TRIS
  • Created Date: Jul 13 1976 12:00AM