Strange to hear you get a white residue from shellite. When i tested there was nothing left, very clean and no residue.

I was wondering about the new diggers wax and grease remover, whether it had heptane in it, for heptane is in Un-Do, as a glue/adhesive remover, but it just says 100% pure liquid hydrocarbons, same as the shellite.

I'll have to look into getting some toluene.