Fuel filler flap

 The chrome filler flap on my 2.5 sport has just started to show signs of corrosion, does any one now how to stop it your comments would ne appreciated

 It’s too late now to do much about as it is showing signs of corrosion.

 But its only about 1/4 inch on the rim of the flap, I think I will try some clear nail polish see if that works better than spending £70 - 114 on a new flap. now where did I put my nail polish…