Do I have to clean the engine and throttle every time I change the oil?

Cleaning the engine can really play the role of cleaning and silencing, but as long as you have been using the original engine oil, it is easy to produce sludge with the quality of the original engine oil. I switched to GT Maroon 5 oil a long time ago. High-quality PAO produces less sludge in synthetic engine oil, mainly because it is very clean. This is my first time to use GT. After running 500 kilometers ahead, the engine became much quieter. 15000 km replacement cycle The waste engine oil changed is old sludge. Now I don't have to clean the engine every time I use it for the third time, and the power has been very good. Details can be Baidu.