OIL MYTH EXPLODED
The Truth About S.A.E. Numbers Commenting recently on the buying of lubricating oil by S.A.E. numbers, Mr. T. H. Innes, Automotive Engineer of the Vacuum Oil Comany Pty., Ltd., stated that for some time there had been a marked tendency on the part of ‘motorists to regard S.A.E. numbers as being indicative of lubricating quality. "Such a trend," said Mr. Innes, "should be corrected, as it places an interpretation on S.A.E. ratings which is entirely foreign to the reason for their introduction." Mr. Innes pointed out that the S.A.E. rating of motor oils was brought into general use in 1926 by the Society of Automotive Engineers to provide a standard form of refer.ence for oil body or: fluidity, However, when announcing its num. ‘bering system the Society of Automotive Engineers stressed that S.A.E.. numbers could not be used in any way to indicate the quality of a lubricant. As the S8.A.E. number assesses body at one temperature only, it gives no indication of an oil’s behaviour above or below that temperature. All oils thin out when heated, some more than others. The most desirable oil is that which thins out least when subjected to high engine temperatures and yet remains fluid when cold.wAn oil of these characteristics. will ensure ready distribution and maximum protection when starting up the engine, and will retain.its body when hot fo give equal protection at full load. An appreciation of this "doublerange" quality as an essential requirement in a good engine oil, explodes the myth which has become associated in the-minds of some motorists that S.A.E. numbers may be taken as a safe guide to lubricating quality. "From the motorist’s yiewpoint," concluded Mr. Innes, "the best advice is first to choose an oil of known brand made by a refiner of outstandIng reputation, and second, select from that manufacturer’s range of oils the grade for your car as recommended in oil charts at garages and service stations."
P. B.
A.
Permanent link to this item
Hononga pūmau ki tēnei tūemi
https://paperspast.natlib.govt.nz/periodicals/NZLIST19470314.2.25
Bibliographic details
Ngā taipitopito pukapuka
New Zealand Listener, Volume 16, Issue 403, 14 March 1947, Page 13
Word count
Tapeke kupu
328OIL MYTH EXPLODED New Zealand Listener, Volume 16, Issue 403, 14 March 1947, Page 13
Using this item
Te whakamahi i tēnei tūemi
Material in this publication is protected by copyright.
Are Media Limited has granted permission to the National Library of New Zealand Te Puna Mātauranga o Aotearoa to develop and maintain this content online. You can search, browse, print and download for research and personal study only. Permission must be obtained from Are Media Limited for any other use.
Copyright in the work University Entrance by Janet Frame (credited as J.F., 22 March 1946, page 18), is owned by the Janet Frame Literary Trust. The National Library has been granted permission to digitise this article and make it available online as part of this digitised version of the New Zealand Listener. You can search, browse, and print this article for research and personal study only. Permission must be obtained from the Janet Frame Literary Trust for any other use.
Copyright in the Denis Glover serial Hot Water Sailor published in 1959 is owned by Pia Glover. The National Library has been granted permission to digitise this serial and make it available online as part of this digitised version of the Listener. You can search, browse, and print this serial for research and personal study only. Permission must be obtained from Pia Glover for any other use.
Log in