What to use for undercarage?

[2003zinc4.6]

Hi, I did a few searches on here and couldn't find a good answer. I was just wondering what works good on cleaning the undercarage of cars that are just sprayed from factory with no clear. The underbody of my car has a light coat of yellow and when i try cleaning it with a towel and simple green, I get a little yellow on my towel(taking the paint off). I think i tried quik detailer and it did the same. So...what does everyone else use? Just use water and wipe lightly?
thanks

[Murr1525]

Re: What to use for undercarage?

For the painted part of the rails under, etc on the edges, a cleaner/wax is good.

For the actual underbody, like drive-train, axles, etc, a blast from a coin-op place during/after winter is good.

[2003zinc4.6]

Re: What to use for undercarage?

Thanks for the advice. I don't really drive my stang in the salt or snow. The undercarriage stays pretty clean. I was just wondering if there was anything made to eat grime off this paint and then dab it off so that I don't wipe any of the paint off by rubbing.

[2003zinc4.6]

Re: What to use for undercarage?

Im not talking about under the ground effect which have the same finish as the body paint. I can understand and appreciate why you suggested cleaner wax for those areas.Im just talking about cleaning such areas as under the floor pans and the rest of the chassis. thanks