Chery is 540,000 kilometers. Do you need to clean the throttle and oil circuit?

Chery a5 went to the 4S shop for maintenance. It is strongly recommended to clean the throttle and oil circuit for ultra-fine products, saying that the engine 1.5W should be cleaned once, and my 5 16 is 4W, which should have been cleaned long ago. You need to add a bottle of cleaning solution when cleaning, and the whole set needs 780 meters. Looking at the user manual of Chery A5, there is nothing that the throttle and oil circuit must be cleaned. It seems that this has little to do with warranty. I don't know if I should clean it. Which brother has done cleaning, give a suggestion, thank you first! Netizen said: Cleaning is not recommended. My Chery's 530,000 km cleaning cost more than 700 yuan. Therefore, the idle speed is high and unstable. Later, the throttle was replaced for free. It's terrible now, the fuel consumption is very high, and it needs 1 yuan per kilometer. I really regret it, brother. I don't recommend cleaning. Netizen said: My Chery a5 was cleaned, and the gas circuit cost 700 yuan. As a result, the car that had a problem for three years had a problem. The fault light of solar terms is always on before starting. When the idle speed is low, the air brake is turned off. Regret is better than not cleaning.