Predicting the Shear Stability of Multigrade Engine Oils from Bench Tests 750378

Engine oil shear stability data from six U.S. and two European car fleets have been obtained using 13 ASTM Reference Oils. These data were obtained to serve as the basis for evaluating the ability of laboratory tests to predict the shear stability of multigrade engine oils in service.
Four types of laboratory bench tests and three different laboratory engine tests were evaluated in an initial program. Based on the results of these tests, additional programs are under way using diesel injector rigs and single-cylinder motored engines in an attempt to improve correlation with the field data. A tapered bearing shear stability tester, not included in the initial program, is also being evaluated. In addition, some recent shear stability activities by the Cooperative European Council are summarized briefly.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.