Can the warm air tank be cleaned with oxalic acid?

Yes, but pay attention to the right amount. If you want to be quick, use the ratio of one to one and pay attention to the time. If it takes a long time, you can use 1: 3, but you should also pay attention to the corrosion. You can use oxalic acid to remove the scale in the water tank, because oxalic acid is not a strong corrosive acid, and the dosage should not be too much, mainly depending on how much cleaning effect you want to achieve.

How to remove the heater water tank:

Remove the instrument panel before removing the heater tank, preferably in a professional repair shop. Warm air tank is an important heating component in automobile air conditioning. The water used to cool the engine rises in temperature after flowing through the engine, and then flows into the warm air tank. The fan blows air into the warm air tank and radiates heat to the cab for heating.