SAE Grade 50 Specific Gravity at 15ºC 0.937 Flash Point, ºC, ASTM D 92 256 Pour Point, ºC, ASTM D 97 -9 Viscosity, ASTM D 445 cSt, at 40ºC 222 cSt, at 100ºC 20 Viscosity Index, ASTM D 2270 104 TBN, mg KOH/g, ASTM D 2896 70