Not known Details About types of solder to use on aluminum radiator
..which includes crevices, conventional plumbing flux and when I have had luck with most solders, 4% silver bearing solder is much better Over time...kinda pricey tho... I had Harris solder readily available at enough time so no large deal for me but highly-priced if you do not require the toughness for off road/ vibration/ continual beatings and m