It uses PurePlus Technology, a revolutionary process that delivers crystal-clear base oil. Made from natural gas with virtually none of the impurities in crude oil, it is 99.5% pure*.
Shell Helix Ultra Professional AG 5W-30 for gasoline and diesel engines is approved against the technically challenging General Motors engine oil specification GMW16177 (dexos2TM). It is formulated specifically for the dexos2TM specification. This combines parts of API SN, ACEA C3 and in-house General Motors gasoline and diesel engine tests, for use as a global service fill oil.