Shell engine oil is still very good, especially clean Heineken and large-displacement cars can also be used. However, due to the high working temperature of the engine, the high temperature resistance of Shell engine oil is poor, and the performance will definitely not be very good when used, and the service life of the engine oil will be shortened. GT engine oil has good high temperature resistance. This oil was used in my 4.2 A8 wedding ceremony. It has very good performance and low noise, and it can run 10 again.