VISCOSITY AND FLOW PROPERTIES OF MULTIGRADE ENGINE OILS--A REVIEW OF AN INTERNATIONAL COLLOQUIUM

An International Colloquium, "Viscosity-Flow Properties of Multigrade Engine Oils," was held at the Technische Akademie Esslingen, December 7-9, 1977, at Ostfildern, Germany. The program of the colloquium, which is the subject of this review, provided an almost complete review of the present state of technology in the field of multigrade engine oils and their development. Besides the requirements of engines for engine oils and the fundamentals of rheology, the following main subjects were discussed: Viscosity classification of engine oils development in the USA and in Europe; Chemical and physical properties of viscosity index (VI) improvers; Cold flow behavior and high temperature viscosity of VI-improver containing oils; Influence of mechanical, thermal, and oxidative stresses; Engine performance of multigrade engine oils; Startability and pumpability of engine oils. Some of the most important results and conclusions especially related to the subject of the relationship of engine oil viscosity to engine performance are reported and discussed. Paper No. 780979.

  • Supplemental Notes:
    • SAE Special Publication 434, Relationship Between Engine Oil Viscosity and Engine Performance--Part 4: Paper presented at SAE International Fuels and Lubricants Meeting, Toronto, Ontario, November 13-16, 1978.
  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • BARTZ, W J
  • Publication Date: 1978

Media Info

  • Features: References;
  • Pagination: p. 11-32

Subject/Index Terms

Filing Info

  • Accession Number: 00196123
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE Special Pub 434
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM