How to clean the accelerator of a car?

(1) Scrubbing with hot oxalic acid solution or coating with potassium permanganate solution.

(2) Wipe with soap or with a little warm milk.

③ Old stains can be washed with detergent first, and then with 10% alcohol or 5% acetic acid solution.

④ Old stains can be soaked in 10% oxalic acid or tartaric acid solution for several minutes.

Then wash it with soap. It can also be washed with 3% ammonia water or 2% borax warm liquid.