"Fuel Treasure allows one tank of gas to be counted as one and a half tanks is a deceptive concept."

Many fuel vehicle owners have found that some gas stations sell a product called "fuel treasure". In the promotion, this product has many functions, such as removing carbon deposits from cars, making the exhaust emissions of cars more environmentally friendly, and the most attractive claim is that it can make a tank of gas run "one and a half tanks of gas". Professor Liu Haifeng from the National Key Laboratory of Advanced Internal Combustion Engine at Tianjin University said that in reality, it is a concept switch. Under extreme conditions, if the engine is very dirty and some cleaning agent is added to completely remove the carbon deposits, it can indeed save fuel, up to 30% to 50%, but engines are rarely in such extreme conditions. Experts say that extensive testing shows that the fuel treasure can save fuel by approximately 2% to 4%.