Go with a flux. Very like the solder, the flux really should be specialised for aluminum or for the combination of metals you propose to join. The simplest option is to acquire the flux from the same supply as your solder, as They're possible intended to operate together. Set from https://spoilerusedincars86173.humor-blog.com/26837983/little-known-facts-about-types-of-solder-to-use-on-aluminum-radiator