I’m refinishing two driveshafts from a Toyota Landcruiser while I have them off the vehicle to replace the U-joints. They are in relatively good shape (southern vehicle), hardly any surface rust as 99% of the original paint is still present. I noticed that they apparently do not have any primer from the factory, just whatever chassis paint Toyota uses.
Can anyone suggest how to prepare these for repaint? Should I remove all the old paint down to bare metal? That would be a lot of work, or should I just clean them up with ?? and spray paint over the old paint??