What does shell ect mean?

Shell ect is a series of engine oils. Shell ECT system includes two 0W and two 5W products, all of which are certified by ACEAC3 and APISN. Shell Top Oil Series adopts PurePlus technology, and ECT Series adopts Shell high-end emission compatibility technology to protect the emission system of vehicles. ECT series belongs to the European standard viscosity of 30, which is usually used on German cars. Shell Fan Chao Heineken's Chinese name ShellHelixUltra is Shell's top series oil, which adopts PurePlus technology and natural gas to liquid (GTL).