You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Low Temperature Viscosity Requirements for Engine Oils in Temperate and Tropical Climates

    Published: 0

      Format Pages Price  
    PDF (172K) 7 $25   ADD TO CART
    Complete Source PDF (1.6M) 59 $55   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Some 30% of the world's car population spread over a large proportion of the world's land mass rarely experiences starting temperatures lower than 0°C (32°F), but frequently encounters high temperatures in the order of 40–50°C (approx. 100–120°F). The present SAE ‘W’ classification, as applied to multi-grade oils, more than satisfies starting requirements in these climates but imposes unnecessary expense and limitations on the nations concerned.

    A proposal is made to extend the existing SAE classification by defining an SAE 30W number for use in temperate and tropical climates.

    Data generated from testing of representative oils in glassware and commercial engines are presented.

    Author Information:

    King, PR
    Chairman, The Petroleum/Automotive Ad-Hoc Committee (under the auspices of The SAE Australasia),

    Committee/Subcommittee: D02.07

    DOI: 10.1520/STP32380S