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https://oil-glup.ru/threads/mobil-shc-bez-ukazanija-vjazkosti-sovremennyj-standart-10w-60-pervaja-v-mire-pao-sintetika-1973-goda.20/#post-24
An interlaboratory test comparison table titled Adventures of a single oil sample in an intercontinental oil cruise contrasts results from Blackstone in the USA, MIC GCM in Russia, Oelcheck in Germany, and Oiltest24 in Germany using a shared sample of 1974 Mobil SHC PAO motor oil. The matrix details test kit prices alongside measured values for calcium, phosphorus, zinc, total base number, total acid number, kinematic viscosity at forty and one hundred degrees Celsius, viscosity index, oxidation, nitration, and turnaround time. Summary verdicts at the base dismiss Blackstone as poor and pale, praise MIC GCM, rate Oelcheck as pricey, and label...