washed my coupe about 2 weeks after new paint job. body shop was not pleased, said i may have ruined paint job by using car wash solution containing wax! can't notice any problem yet, has good shine. any advice? how do i remove the wax, and what will the problem be, if any?? has been garaged except for a couple drives. thanks, need advice.                                                      a man never stands so tall--as when he stoops--to help a child  

I doubt you ruined anything.  

Ask them for the MFR's name of the paint thay used or tech data sheets for the paint they used. These sheets specify the paint cure time. Personally, unless you have someting pretty exotic, there's probably no harm.  

Yeah it certainly depends on the MFR. Do like JLG says and get the info. Most OEM paints cure very quickly otherwise they couldnt go thru the manufacturing process. Also depends on whether it was cured in an oven or not. In the old paints VOC's (volatile organic compounds) would gas off for some time and waxing those could stop that process and cause things like solvent bubbling under the surface of the paint. Todays paints use less VOC's and cure pretty fast,,,, generally.  

Did you have the car clear coated after the paint job?  If so, then the one who told you that you screwed up by using a wax car wash is full of you know what.  By using a car wash liquid with wax in it, you will never again have to use elbow grease by waxing with a conventional wax.  Hey, welcome to the 21st century.  

Unless you used a hard paste wax that involved physical pressure on the new paint, you have no problem.  Think about it.  You shoot a fresh coat of paint.  What is the next step?  Wet sanding!!  Then buffing to a shine.

If you take a factory job (no sanding) then a wet wash is not a problem.  

The reason for recommending no waxing until 90 days and/or no heavy duty washing until 30 days is to give the paint time to cure. Paint will normally cure within this time frame. You most likely have done no damage to your paint job. In fact most washes with a wax included last for 21 days or less. The wax/silicone evaporates during this time. I would recommend mild car wash soap for future washings, no household detergents, please. Studies have shown that only a mild polishing 1-2 times per year is all that is needed to keep your paint job looking fresh. No waxing required.