Radiator — inspection and cleaning (Opel Vectra A)

1. If the radiator was removed due to a suspected blockage, reverse flush it as described in Chapter 3.

2. Clean dirt and debris from the radiator fins using a blast of air or a soft brush. Be careful, as the fins are sharp and can be easily damaged.

3. If necessary, have a specialist perform a special test for internal blockage of the radiator.

4. If the radiator is damaged (there are leaks), contact a specialist. Do not try to weld or solder a leaking radiator yourself, this will damage the plastic components

5. In extreme cases, minor damage to the radiator can be sealed with a special sealant.

(Material was taken from a resource: OPELBOOK)