Posted by jim in n.y. on Wednesday, May 03, 2006 at 5:58PM :
In Reply to: Re: sealing up pinholes in oil pan posted by David Sherman on Tuesday, May 02, 2006 at 9:55PM :
yup, i'm using zinc chloride for a flux. bead blasted everything first. then applied flux . heated from the back side untill the solder melted on contact. some took but most didn't. just bead up and wont stick. obviously still contaminated.i think i'll take it to a pro and have them tig it. after i get all the solder off.