My 2009 pre-facelift Galaxy Grey 2L Tech Sport is only used on dry, salt free roads in the 'UK Summer', whatever that is! Always garaged and much loved. Done less than 41k so far. Imagine my horror at finding rot underneath the rear crash structure. Had the structure grit blasted and coated and the shell sanded and painted before refit. As a result I've decided to undertake a more intense search for iron oxide. Now had to replace the window guides with post facelift 'protected' versions as they were corroded adjacent to the rubbers. Dinitrolled inside of doors whilst they were apart. On axle stands a present, about to clean and coat everything I can reach. What should I be looking for?
Thanks to anyone who helps