🚀 go-pugleaf

I have used Duro's Extend on several cars (many of which came from high
rust areas such as the East coast and England).  It is excellent for 
use on surface rust and will also slow the creep of rot on puncture
rust.  If used on puncture rust you must be sure to coat both sides of the
hole with liberal amounts of the stuff. On large holes (bigger than a 
quarter), this is no problem since you can stick your finger thru and coat
the inside.  For smaller holes (pin holes, etc.), I prefer to use a 
sponge brush (the type used to apply stains and latex paint). Saturate
the brush with Extend and dab it on with firm pressure.  This will cause
the Extend to ooze thru the holes and, at least, coat the inside edge of
the hole.
In addition to Duro Extend, I have received mailers from Loctite advertis-
ing a similar product (I don't recall their name for the stuff but it may
also be called Extend).  Loctite says their product can be used as a final
surface coating on bare metals that will see adverse environments (i.e.
ocean spray, some corrosive industrial environs, etc.)  Their product
also appears to be some sort of polymer coat.
            
                                              jeff@wjvax