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Fuel treasure (also known as gasoline detergent and fuel additive) is a kind of vehicle chemicals, which is the common name of the third generation gasoline detergent. Its function is to solve the problem of carbon deposition in the fuel system of EFI automobile, quickly restore the best working state of the engine, make up for some defects of gasoline, and give gasoline some new excellent characteristics, such as improving atomization, reducing wear, protecting the engine and reducing emissions. Fuel additives are closely related to the development of automobiles: the first and second generation additives are 1960- 1990, and the mainstream models are carburetor models, and the corresponding additives can solve the carbon deposition problem of carburetor (mainly polyisobutylene succinimide); The third generation additive (commonly known as fuel treasure): 1990-20 10, the mainstream vehicle is multi-point injection (manifold injection), and the corresponding additive can solve the problem of carbon deposition in the injector and intake valve in the EFI system, and its chemical composition is mostly PIBA (polyisobutylene amine). The fourth generation additive (commonly known as direct injection treasure): After 20 10 years, the mainstream vehicle type is in-cylinder direct injection vehicle type, and the corresponding additive can solve the problem of carbon deposition in the injector, piston tip and combustion chamber in the in-cylinder direct injection system, and its chemical composition is PEA (polyether amine). The purification factor of high-quality gasoline additive can purify harmful substances such as colloid in fuel and carbon deposit in engine. After continuous addition, the carbon deposit in the fuel system can be removed, the original power of the vehicle can be restored and the best working condition can be maintained for a long time.