Did a clean on the underside of the bonnet today, been meaning to for ages...just always forget!
Used Surfex HD and a detailing brush and wiped it all clean, the bonnet edges, and tops of the wings. Then used a gentle polish to mostly remove layers of water spots, wiped with isopropyl alcohol, then finished with Collinite 915. Looks so much better, although it's not that shiny as it's mainly just base coat under there. I left the bonnet lining in place as that was clean and it's clean underneath too.
I did find one area of funk, it's where the underside just rubs or catches slightly where the air intake grate is on top of the grill, nothing major.
I rubbed it down a bit and then treated it with BH Hydrate 80 and painted it with the matching LY7G paint I have from Fisher Motor Factors in Lincoln. Their touch up sticks are always a spot on match, been using them for several years now.
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