This Albatross has been sitting on a runway in Nevada for several years. Oil from the radial engine was
sprayed against the fuselage due to the prevailing wind. When we tried to wipe it off, our hand actually
had a white chalky dust from the paint, not the oil!

You can see the area that was sprayed with eOx AHFR, rubbed with a cloth and rinsed with eOx AC.
The area is actually shiny and looks like new!
AHFR Technical Data Sheet