On July 22, numerous owners of fuel-powered vehicles observed that certain gas stations were promoting a product known as a 'fuel booster.' This product boasts an array of benefits, ranging from the removal of carbon deposits in vehicles to making exhaust emissions more eco-friendly. The most enticing assertion is that it enables a single tank of fuel to last as long as one and a half tanks. However, Professor Liu Haifeng from the National Key Laboratory of Advanced Internal Combustion Engines at Tianjin University emphasized that this is, in fact, a conceptual shift. In extreme scenarios where engines are heavily laden with carbon deposits, adding a detergent to remove these deposits can indeed lead to energy and fuel savings of 30% to 50%. Nonetheless, engines seldom operate in such conditions under normal circumstances. Experts have affirmed that numerous tests have revealed that the actual fuel savings rate achieved by fuel boosters typically ranges between 2% and 4%.