While I've been maintaining the ride externally for some time, this time I decided to cleanup and seal door jambs. Well, they almost always appear cleaner to everyone but are one of the neglected areas that get attention as they aren't visible both outside or inside but only for that moment when the door is open 
So, following are the things I used:
- 3m APC (diluted 1:25)
- Duragloss Aqua wax (a sprayable sealant from the duragloss range)
- 2 Towels (one for apc cleanup and other for sealant spreading/buffing)
I dont have before pictures to show here, but the towels condition after cleanup should give you an idea of the amount of dirt I pulled (both sides of the towel):

The area was then drived with a MF.
Duragloss sealant was then transferred to a small finger spray bottle and then sprayed in to the door jambs area, spread and buffed and here is how the door jambs finally looked (bad lighting + mobile cam but should give you an idea):
Rear left:

Rear right:

Driving side:

Comments and feedback is welcomed.