Christo, It's always great to know you stand by your products.
I was asking about the POR-15 because I was trying to avoid the sanding/prep as the rust is still currently minor. If I need to sand/prep it, then I might as well just go with the rattle can stuff. Actually, thinking about it, there is no way I am going to be able to get in all those nooks and crannies. I'll go with the POR-15 stuff.You can try any type of rust inhibiting coating. But you must sand, metal brush or shot blast to get out the rust. I would then wipe with a acetone solvent. Paint asap. If you do not I would think that you might be chasing something you can not catch.