Cement On Porsche Need Professional Help

[NickCats]

On my way home from work Friday, the SUV in front of me hits this huge puddle of crud in the road and splashes it all over my car. I figured it was time for a good wash anyway, so when I got home, I gathered up my supplies and started the process.

As I am drying off the car, I notice that some of the crud did not wash off ( I am assuming that cement was mixed in with the mud and gunk ! ). I got out my orbital polisher and Z5 and did the best that I could but I was still not able to remove all the remnants from the paint...

I took a look on autopia and they suggested distilled vinegar or this stuff :

http://www.topoftheline.com/cement-concrete-remover-auto.html

Does anyone have any experience with this product ? Will distilled vinegar hurt the paint ?

Any suggestions from all you detailing gurus, or should I take it somewhere and have a professional take a look ?

Thanks,

Nick

[KevinH1990]

Muriatic acid will take it off and won't harm the paint accord to "Click and Clack" on CarTalk.com It was the subject of a call that I think you can still find on their web site. They actually checked back with the guy and he confirmed it worked fine. Here's a link: http://www.cartalk.com/ct/review/show.jsp?showid=200715

Please confirm that yourself before you try it at home. I'd hate to be responsible for destroying your paint.

Good luck

[kabel]

The vinegar should not hurt the paint, it is a common solution for helping to remove water spots too. Try to re-hydrate the spots if you can by leaving a wet wash cloth on them for a while.

I do not think it was actually concrete, one of the under layers of a road is this very fine grit, grayish material that when mixed with water does stick and harden like concrete. Had this happen to me a few months back when the road leading to my house was being redone.

I ended up washing the car multiple times, gently scubing the affected areas, then used a clay bar to remove what remained. If I had a pressure washer I probably would have (cautiously) employed that too.

You will want to apply your favorite wax product when your done though.