Cquartz Stain Problem??

[richluu]

For all the folks out there that have used cquartz, have you experience road dirt stain/grime stain on your car? So I applied cquartz on there over a month ago on my brother's '13 Lexus CT. I love how it easily removes dirt on there. So these road grim stains I see on the car before washing them are black. After the wash, they seem to turn to like a "light brown" stain that I can't seem to remove. I asked if he hit some tar or road slurry or anything, but he said no.

I tried using Optimum Power Clean and scrub it to see it would come off. No luck there. Would the only way to remove them now is to polish it off and reapply it? Any thoughts or if anyone experienced this? I guess a slight problem was that I had some left and used it on the plastics and door jams so don't have any extra laying around and would have to get a new bottle. Thanks in advance!

[Avi@CarPro]

it looks like tar spots , kind of Naphta base oil,
try removing with tar remover , scrubbing it.
if it doesnt remove it, try apc neat.
if still doesnt come off , you will need to polish it unfortunately.
by hand polish with finishing polish it will come off.

[richluu]

Thanks Avi. Would you suggest TarX or TRIX? Would using either of this product remove the cquartz coating on there?

[Avi@CarPro]

i would try Tarx first, it wont affect the coating , neither Trix.
spray it on a sponge it on the stain, if it doesnt come off you need to polish it and coat again.

Avi