Cement "dirt splatter" ?

[Coderedpl]

So there was some road work being done around my neighborhood and I managed to drive over what I can only assume was wet cement dust or something. Honestly I don't even know what to call it, but its all over my wheel liners. I tried spraying APC and it didnt help THAT much. 

Besides blasting it away forcefully with a pressure washer, does anybody have any ideas on how to potentially dissolve it? 

It's not hard, and if i run my finger across it, it comes off. Unfortunately I can't scrub every little nook and cranny that it got into.  

Picture attached.

 

Any ideas? 

[Rich]

I'd take it to a do it yourself car wash and use the spray gun there and get as much off as you can.  Be careful using a wash mitt. There may be some fine pieces stuck in the fibers that can scratch your paint. 

[Coderedpl]

That's really the only idea I came up with thus far. 

I might get some generic, strong, all purpose cleaner and spray the hell out of the liners, let it sit and then rinse. 

[Rich]

Maybe spray it with some APC , but be careful.  If you have a soft bristle brush, you could use that and then do a paint correction after.  Boy, I'd be pissed off. Sorry for your troubles bud.

[falcaineer]

That sucks. But since it appears to be the wheel well, what keeps you from trying the brush, "industrial" soap and pressure rinse at a local pay and spray? No real fear of scratches on that part of the car, I wouldn't think. My two cents. Good luck, and let us know what you figure out.

[mc2hill]

There are cement removal products that you could try if the other solutions do not work.

[Coderedpl]

I don't have to worry too much about paint being scuffed because the car is vinyl wrapped with a matte finish, so swirls and what-not will not be there, just have to be careful I don't catch a rock or something on the wrap accidentally. 

[Coderedpl]

So I went to local coin op, bought some generic APC/Wheel cleaner and sprayed the living crap out of all the liners. After a lengthy session of rinsing, I got most of it "cleaned". There are still some spots that it shows through but for the most part its good. 

[falcaineer]

Thanks for the update, glad it worked out pretty well. Did you try the coin op brush?

[Coderedpl]

18 hours ago, falcaineer said:

Thanks for the update, glad it worked out pretty well. Did you try the coin op brush?

Yep. I won't deny, the pressure on it was a bit crappy. If it had higher pressure, I would of gotten it a bit better. There are some very faint marks but it's a fender liner, I'm not expecting perfection. When summer comes around I will likely lift the car on a jack, find some strong APC and just wash down the whole undercarriage with a better pressure washer.