Meh, not sure it did anything.

This product shot out like a straight stream, instead of a cone, as I would have preferred. It foamed up some... let it sit, rinsed it away, and afterwards couldn't tell the difference. Using the fine bristle brush to remove dust build-up was the real magic. I don't know if this cleaner did anything else at all... perhaps it made the fins more efficient? Perhaps not. I'll never know, and probably won't buy a cleaner like this again anytime soon.

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