Cleaning intercoolers

What's the best way to clean inter coolers the make sure no nasty business if left in there?
Got some smic's I've left sitting in the carport and may need to use them again.

 

The same as the best way to clean a radiator, without removing the tanks & rodding the cores.
A pulsating water gun connected to a garden hose & an air compressor.

 

run petrol through them and shake well .

this will remove any undesirables .

then run water through them .


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We've used Shellite before, dissolves all the oil residue and brings em up squeaky clean.

 

Had mine acid dipped - gets rid of any little critters that might be in there.

 

Thanks guys, that gives me a few options to try out