100% synthetic motor oil - Designed to meet the special requirements of manufacturers. Designed to meet the most demanding requirements of high performance engines, including General Motors and those requiring API SN or ACEA C3 specifications. Fuel economy. Passes ACEA fuel economy tests ACEA Ml 1 IFE (CEC-L-54-T-96) with a minimum fuel economy improvement of 1.7%. Designed to meet General Motors requirements. Passes GM RNT GMPTE-T DUR021 valve train wear test for cam and valve lift wear. Passes GM aeration test, GMPTE-T MEC024. Passes GM internal test on gasoline engines (OP-1) GMPTE-T DUR020 for viscosity increase, TAN and TBN. Passes GM diesel engine test, GMPTE-T DUR019 for wear, cleanliness, oil consumption, viscosity increase and low temperature pumpability. Increased durability and excellent wear protection. Passes ASTM Sequence VIII bearing corrosion test. Passes Sequence IVB wear test for valve train wear. Unsurpassed engine cleanliness. Passes ASTM Sequence IIIG piston deposit formation test for viscosity increase, piston deposits and cam and lifter wear. Passes VW TDI test for piston cleanliness and ring adhesion. Passes VH Sequence sludge test. Passes M271 engine sludge formation test. Excellent carbon control. Passes DV6C medium temperature oil dispersancy test. Shell Helix Ultra Professional AG 5W-30 has been approved by General Motors for use in petrol and diesel engines to their stringent GMW16177 (dexos2) specification. Formulated to meet the requirements of dexos2 which includes API SN, ACEA C3 and General Motors internal tests on gasoline and diesel engines. Specifications, approvals and recommendations: API SN, ACEA C3, General Motors dexos2 license GB2B0611014.