I'm going to try to get some more pictures as I pick at the rest of the truck in the next month or two and get some good "Done" pictures when it stops snowing and the salt has been washed away.
Below is one of the wheel wells that needed a lot of help. They were caked in tar, and the tar had a lot of embedded dirt so when I washed it, it never looked remotely black. It took 2-3 applications of Tar-X, usually letting it dwell for a minute or two, then wiping off with some junk terry cloths I was going to chuck anyway. I did a final rinse with some ONR and wiped dry. No point in dressing because it was wet outside, but I'll do that for my final pics.
Before (it just looks dirty, but that dirt is embedded in a thick layer of tar):
Before/After (you can see on the edge how thick the tar is)
After:
This exposed how chipped up the paint is in the wells, and I'm debating on what to do with that. i guess I could get a can of touch-up paint and mask everything off and hit those areas. Or, maybe it would look better black? Any thoughts? A buddy of mine has a paint booth at his house, so I might be going over there anyway to have some other touch-up work done. The painted edges of the wheel wells are pretty munched from rocks and they will likely start rusting soon.
Special thanks to Rasky for the introduction to Tar-X. I normally use Tarminator, which is a great product, but Tar-X has a very fine mist so you can control how much you apply a little better, seems a little more powerful, and definitely smells better (though you still need fresh air when using this). I'm looking forward to the next detailing season getting to see what it can do.