I washed the camper

To be more specific -- I paid for car wash. ;) I have a car wash close to the place I park my camper, so having a day off today I drove my camper there to have it washed.

I paid 25 PLN ($7.33) for 40 minutes of two guys' work. The camper looked that great two years ago, just after the paint job. ;)

From Volkswagen Transporter T3

The removed all the dirt, but they also removed some paint from the place where the two sheets of metal are connected on the left part of the camper's body.


I now am wondering what to do to protect this spot from instantaneus rusting.