Gasoline additive and use method thereof

The invention relates to a gasoline additive and a use method thereof in the technical field of additives, and the additive comprises the following components in percentage by mass: 2-55% of polyether amine, 2-55% of Mannich base and 0-55% of hydrocarbon solvent oil. The mass ratio of the additive added into the 92 # gasoline is 0.01-0.03%, and the mass ratio of the additive added into the 92 # gasoline and the mass ratio of the additive added into the 98 # gasoline are both 0.02-0.04%. The gasoline additive disclosed by the invention can improve the combustion efficiency of an engine, reduce fuel oil consumption, enable the deposit drop rate of an air inlet valve to reach 92.3%, enhance power and effectively reduce the exhaust emission of an automobile. In addition, the gasoline additive disclosed by the invention has a clean-keeping capability on an engine, does not corrode metal, rubber and plastic, and can be normally used after being mixed with gasoline in an environment of minus 50 DEG C. 一种添加剂技术领域的汽油添加