Does Youlisheng's recent 10W-40 mineral oil affect the car? Do you use cleaning agent to clean the engine and throttle?

Oil cannot be mixed. You can change different brands. A series of cleaning items, such as throttle, oil gallery and carbon deposit, are analyzed in combination with different engines and driving conditions. The cleaning agents used in 4S are all approved by FAW-Volkswagen, which has no other influence on the engine and is safe to use. The noise of an engine is related to the wear and carbon deposition of its internal mechanical parts, which is inevitable for any engine with mechanical structure. As long as there is no abnormal sound, you can use it safely. When the vehicle power system works normally, it is necessary to focus on the problems of excessive carbon deposition in the engine or gasoline quality, as well as the sensory perception that driving habits and road congestion will increase fuel consumption.