Tony, I called the romix company and they told me that it will not harm the aluminum but it might affect the welds if there is magnesium in the welds. I asked about the speedyclean product, if they were a re-seller and the romix company said that they are a copy of the romix, cost about 2x as much and has very bad fumes that will burn your eyes and skin so you need a lot of fresh air if you use the product. Let me know what you end up doing and how it works.