Previous issues with gasoline quality

Refined products from local refiners and blending plants that supply private and independent refueling stations most often become the source of fuel quality problems in China.

In 2012 and 2016, substandard naphtha was blended into gasoline to drive the profit margin. The high silicon content in de-foaming agents and the corrosion inhibitor content of naphtha led to failures that affected thousands of vehicles in Anhui and Sichuan provinces.

Blending plants also make use of methylal as a gasoline blending component to reduce production costs. The high density, low boiling point and low octane number characteristics of methylal lead to incomplete fuel combustion, resulting in a large quantity of gum and carbon deposits in the combustion chamber.

In April 20