[Scott Robson]

Tony
I believe you are talking about after coolers, while I’m talking about heat exchangers, my after coolers do not have this coating inside, just straight aluminum housing.

P.S. starting to get everybody around here to use that meta lube you suggest when putting their after coolers back together .

[Scott Robson]

Two Tony’s out of Destin, Fl. about an hour away, they are the only Cummins dealer in the area, and they are great.

[Scott Robson]

You can also take them to some one who has a sonic cleaner , that can heat up the housing and also cleans corrosion between core and housing, or soak the whole unit ( with caps and 0-rings off) in diluted Barnacle Buster, try this before beating them out. You can clean cores with Barnacle Buster or similar product after you have them out.

[Author]

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