Soldering Filler Neck

Brief video of soldering technique, part 5.

[@jimh3362]

Good looking solder joint!

[@w.w.2restorations.vehicles698]

Thanks Jim.

[@robertclymer6948]

Very nice solder job. I loved they you got it to flow around the joint for a consistant fill. Question sir??????? Is there a flux solder that can be used on an aluminum radiator filler cap base? Getting small leaks around the press fit filler neck. OR would I use alum brazing rods for this job due to radiator pressure? Thanks for sharing, Cheers from Michigan.