Do cars still need to run at high speed after cleaning up carbon deposits?

Carbon deposits need to be cleaned up. Unless they are removed and cleaned up, there will definitely be places that cannot be cleaned up, and the thick carbon deposits will not be cleaned up thoroughly. Stubborn carbon deposits will only be removed from the surface and the bottom will only be softened. Moreover, the carbon deposit and cleaning solution after cleaning will adhere to ternary, and it needs fierce high temperature to burn it. So it's best to run at high speed.