Re: Muriatic Acid for Gas Tank Cleaning
I use muriatic acid to get deep rust off. Neutralize and flush. Then a phosphoric acid rinse. I rinse with denatured alcohol to get the "dusty" / "flakey" phosphoric acid residue off.
Also, denatured alcohol is very good at removing gum in tanks - not much will touch it - even acetone seems to have limits working against gum and varnish, but denatured alcohol seems to work pretty well.
I do all my tanks, even new, with phosphoric acid...and don't use sealers.
Daddy always said, "If yer gonna be dumb, you gotta be tough!" and I'm one tough son-of-a-bitch!!