External Flushing Radiator Fins 8V92

[Curt Sprenger]

8V92 Radiator. The engine coolant temperature stays within the
specifications when driving on flat or climbing hills. Inspection, from
what I can see, the radiator looks good. The only visible thing from the
engine side is the radiator could use a good flush to get the dust out
between the fins. Anyone done this? High pressure or just city water
pressure? Place plastic on the engine side to keep the dirt from washing
onto the engine, or don't worry about that?

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Curt Sprenger 1987 PT38, Anaheim Hills, Calif.