What must be used for the parts of the hydraulic main cylinder
So all the oil cylinder manufacturers, the hydraulic cylinder parts must be washed by hydraulic oil, the effect is good, the recovery is good.
You can't use gasoline, you can't use diesel, only kerosene is less dense, it's a volatile liquid, you can easily remove impurities
Generally speaking, it is best to wash the oil with kerosene, but it is difficult to find so much kerosene in the factory, and it is volatile and not good to save
