Engine Oil Viscosity Classification J300_202104

DOI: https://doi.org/10.4271/J300_202104

Issuing Committee: Fuels and Lubricants TC 1 Engine Lubrication

Publisher: SAE International

Pages: 9

Rationale: 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.