How often does Sail 3 wash the throttle?

How often does Sail 3 wash the throttle? The following is my personal opinion:

Sail 3 cleans the throttle every 20,000 to 40,000 kilometers. The cleaning cycle of the accelerator is not a fixed time, which requires the owner to be prepared in daily use. If the driving environment is bad, you may need to clean the throttle within 20 thousand kilometers. Take 1.3L manual comfort sunroof version of Sail 3 of 20 18 as an example. It is a small car owned by SAIC-GM Chevrolet, equipped with a 5-speed manual transmission. The front suspension is McPherson independent suspension and the rear suspension is torsion beam dependent suspension. In terms of body size, the length, width and height of the car are 4300mm, 1735mm and 1504mm respectively, and the wheelbase is 2500mm.