My second 1965 Dodge Dart.

Matt, that is where the Owatrol penetrating oil comes in. It is a bit like the Waxoyl, but after a week, a little depending on how thick layer it is, it will dry to a see through layer that is very hard. And, it sticks very good too. Not like some of these products that makes rust black and then can be peeled off easily.
But, I am not saying it will last for me. Just that it is the best product I know of for just this problem. It might be other and better products, just that I am not familiar with that.