Mike Phillips has a
good article on this.
Meguiars Ultimate Compound + microfiber applicator.
I use Meguiar's Ultimate Compound on a micro fiber sponge applicator by hand.
All three of the above.
Here's the deal, when a painted object bumps or rubs against or across another surface it can impart itself, (the paint portion of itself), against the other surface, in your case your car.
The imparted paint is IMPACTED onto the paint kind of like cement or superglue.
The wrong way to try to remove it is with any type of buffer or polisher and a foam pad.
The right way to remove it is to use some old fashioned elbow grease. A little elbow grease and ANY quality compound or polish and normally some type of "fiber" applicator pad or material.
The reason for working by hand is because you can --> key word -->
exert a lot of pressure using only a few fingers, against the cloth with the compound to a small area, (the impacted, imparted paint transfer).
Rub till gone and then re-polish the area by hand with a foam pad (if you don't own a polisher) and this will remove any "marring" induced by the fibers of the fiber applicator or the fiber cloth, (I've used simple bath towel type terry cloth with great/fast success).
If you have a polisher, then after removing the impacted paint transfer then re-polish to remove the marring by machine.
