I would not use Olive Oil it will go rancid and smell. I do not think there is anything wrong with that bottom that a good condition and clean would not fix.
Clean it with Dawn 5x dishwashing pump cleaner and condition it with Blackrocks.
Thank you! I will check this out! Basically I am trying to decide if I should purchase a well used Noe that I can clean up and polish myself... or need to invest extra money for one in better condition because the vachetta just cannot be repaired.