jlb532

Road construction up and down my street, had to drive through some pooled cement runoff, and now there is cement splatter both in the wheel wells and on the lower door panels/bumper.

Any tips on safe removal??

1999Porsche911

Muriatic acid.

jlb532

Is that safe for the paint? Any special tips to use it? (dilute w/water, let set x minutes, etc?)

BillJ

He is kidding (i think) - that is used to etch concrete

1999Porsche911

No, I am not kidding. Begin with a dulted amount and a soft paint brush (bristle). Dab the acid solution so it seeps behind the concrete. Keep the concrete wet and using a plastic scaoper of similar tool, chip the concrete off. Use a stronger solution if necessary. Let the acid work.

It will not affect your paint.

skiracer

I had a similar thing happen and it freaked me out completely, especially since it wouldn't budge w/ a finger nail scraping. However, a blast w/ high pressure water took it off immediately! Hopefully you have enough wax on your P-car for similar results. Best of luck!

BillJ

Wow - that isn't that something. 1999 knows his stuff and i would trust his advice. Used to sell that in our decorating business to prepare concrete for paint. Never thought it was safe to use on a car seeing that we recomended using latex gloves to protect your skin!

jlb532

That would be nice. Matter of fact I did just wax it last week, so I'm hoping that will provide a buffer and allow for easy removal...