This SAE Standard defines the limits for a classification of engine lubricating oils in rheological terms only. Other oil characteristics are not considered or included. This revision includes an additional acceptable method for determination of low shear rate kinematic viscosity at 100 °C, ASTM D7042. The inclusion of an additional method can enable engine oil producers to improve logistics and quality assurance. The equivalence of ASTM D445 and bias-corrected ASTM D7042 in determination of kinematic viscosity at 100 °C for a wide variety of engine oil formulations within the viscosity range covered by the current SAE J300 Standard has been demonstrated in the ASTM Research Report RR:D02-1741 and the ASTM Research Report RR:D02-1931.
Engine Oil Viscosity Classification
2021-04-30
Conference paper
English
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