Originally Posted by tech69
We're working on a 55 300 and it has the old school red oxide primer. It has a few areas that need patches but I'm astonished at how little surface rust is under areas with original paint/primer and how much more is under the areas that have been spot repaired. Not every job is gonna get stripped and sometimes I'd rather leave the factory zinc coating on the car along with at least the original primer.
In the case of a 1955 car, I would take it the car down to bare metal or I wouldn't touch it, zinc primer, how little surface rust there is under the original paint/primer....I don't want to get picky but you yourself said how "little" surface rust is under the areas with original paint/primer....then it's not surface rust...it's rust underneath...the car is 58 years old...if there's a little rust...it's got to be cleaned up or it will come through. Products today are much more apt to minimize rust than they where 50 to 60 years ago, wouldn't you agree? Why, when doing a restoration would you want to start a foundation on 60 year old technology?