Motor oil or engine oil is an oil used for lubrication of various internal combustion engines. The main function is to lubricate moving parts; it also cleans, inhibits corrosion, improves sealing, and cools the engine by carrying heat away from moving parts. Specifications SAE 20W50 15W40 10W30 Appearance Clear & Bright Clear & Bright Clear & Bright Density at 15 ° C ASTM D4052 0.8859 0.8763 0.8616 Kinematics Viscosity cSt at 40 ° C ASTM D 7042 155.5 103.6 79.71 cSt at 100 ° C ASTM D 7042 17.79 13.36 12.30 Viscosity Index ASTM D 7042 126.2 127.0 151.1 TBN, mgKOH/g ASTM 2896 6.59 9.40 7.64 Flash Point , ° C ASTM D 92 216 212 214 Pour Point , ° C ASTM D 97 -9 -9 -9 Packing: 20W50 / 5lt 15W40 / 1lt , 2t and 5lt 10W30 / 5lt Or Buyer's Request