1988 Caterpillar 953 radiator cleaning

[cgordon2352]

good evening,
I recently purchased an 88 cat 953. I’ve changed all filters and fluids except for radiator. I’m gonna test antifreeze to determine what I need to do. How ever I’d like to clean the coils/screen portion of the radiator. Can anyone explain the process and recommend a cleaning product to help with the process?

 

[Dave Neubert]

any cleaner like purple stuff and a pressure washer shoot straight into fins as not to bend them take off fan guard and wash from inside as well as out side