1968-02-01

The Cold Cranking Simulator Method for Viscosity of Motor Oils at Low Temperature 680067

The Cold Cranking Simulator (CCS) has been shown to be a relatively inexpensive, fast, and accurate instrument for measurement of motor oil viscosity at low temperatures. ASTM cooperative work with the CCS has resulted in establishment of a Tentative Method, D 2602-67T, for motor oil viscosity at 0 F. Further data show that the method could be extended to -20 F if desired. The SAE has adopted the new Cold Cranking Simulator Method as the basis for revision of the J300 motor oil winter grade viscosity classification. This paper summarizes the efforts leading to the solution of a problem of ten years' standing.

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