08HR350Z

Hi there i have black specs all across my back bumper that don't come off with a car wash or scrubbing with a towel. Anyone know how to get it off i got it used in November and didn't notice until after buying the car. Car is 2008 paint i believe is pearl white nissan 350z Any help is greatly appreciated thank you

bealljk

iTrader: (13)

It would be helpful to know what it is? Or at least your best guess? Exhaust gunk? Tar? Bug droppings?

If it’s not coming off with traditional car soap & water I would try some bug & tar spray, if that doesn’t work maybe brake cleaner in a hidden spot on the bumper to see if that works. You might be looking at a sand-down and respray if nothing else works.

MicVelo

Looks environmental.

Have you tried:

- Clay bar first

- If no-go, try a bit of fine polish

- If that seems to take it out but is difficult, go to a heavier cut polish then work back to fine.

jhc

My crystal ball says the 2nd photo shows contamination only on the vertical surfaces, not horizontal. For that reason I'd be inclined to rule out environmental causes in favor of paint overspray. Bug and tar remover might work. I'd go with a slow evaporation solvent like low odor mineral spirits as opposed to a fast evap solvent like acetone using a light colored terrycloth. Use a clean part of the rag for each new section.

MicVelo

Good eye, John! Didn't even look at the horizontal but ya, nuttin' dere. You da man.

jhc

Nope, you da man Mic!

g3rard

For that kind of issue, I would use a clay bar with lube.

Ponyryd

That looks like fallout to me, you need a fallout remover to remove it, yes a clay bar will work but you’ll be there forever, and it doesn’t work as well as fallout remover. I did my G35 a few months back, turned out great, I’ll try to find the pics.




I used Iron-x for this, works great but smells terrible. You could also use AutoGlym Magna.
Of course, if it’s actually black overspray and not metal fallout nothing will change, lol.