The worst part of my Marauder cosmetically is under the hood. The aluminum is all oxidized and the COT is crusty and is just looked neglected. The COT is getting deleted shortly, so I cant do anything about that for now. I went at the auminum with a brush and WD40 and it makes a nice difference. Still not great, but an improvement. Sprayed the bay with Simple Green, rinsed, and then used Meguiars trim detailer on all the plastic surfaces. I think it came out pretty nice considering.
Before:
After: