You can pick up a can of a/c coil or fin cleaner at most hardware stores. They are no more than degreaser/cleaners such as Simple Green. All you need is something that is aluminum safe. Spray it on and hose it off. Good for a/c coils and engine radiators.
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Jerry & Judy, Fremont, California
2017 Dutch Star 4018
Freightliner, HWH Active Air
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