I just changed the tranny on my '98 Expy and need to know what I can use to clean and flush out the integrated transmission radiator cooler and lines. The lines have not been connected to the tranny yet so I'll feed pressurized air along with the solvent to run through the inlet line and drain the gunk through the outlet line into a pan for disposal. Any ideas as to what solvent I should use? Thanks.

 

There's something my dealership uses specifically for this purpose. Can't remember what it is but if you call your dealership's part's counter they may be able to tell you.

 

Napa parts stores sell a tranny cooler flush product in aerosol containers. Dan.