The brass and steel fittings aren't the problem. In fact if you use brass hex fittings and don't use a proper line wrench (box style with a cutout to pass over the tubing) you'll wind up rounding off the hex on brass fittings. You just need to make sure that the flares are proper double flares and get them tight enough. Everything needs to be clean as well so the tubing seats properly in the fitting. You may have to replace some of the tubing to get leaks to stop.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.