How to clean the water tank of Buick Old Regal

It is likely that the water tank is blocked and the heat dissipation is not good. If you want to clean the outside, flush the condenser and water tank inside the bumper with a water gun (be careful not to adjust the pressure too much) and remove the dust in the middle of the radiator. You can ask them to wash the car when you wash it. If it is to clean the inside, it is necessary to remove the water tank and connect it with the internal cooling pipe. This requires professional experts.