How do I remove CarPro PERL from interior glass?

y8s

y8s

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Playing around wiping PERL on the dash of my vehicles but I ran into a problem... whether I spray or use an applicator, I always get smudges on the windshield.

It seems to be pretty tenacious and resists both Sprayaway and Optimum PowerClean.

I was thinking of either using good old fashioned windex or diluted IPA but I thought I'd ask here.

Matt
 
Try a cloth with mineral spirits then clean with a glass cleaner.....
 
Tried mineral spirits
Tried acetone

streaky spots are still there.

PERL is tough! Tempted to try a razor blade.
 
Being deliberately gentle...
Try using some: cerium oxide-slurry on a terry-cloth/towel.

:)

Bob

Hint/Tip (?):
I "borrow" some of The Good Wife's baking-parchment paper,
or wax-paper to protect the interior auto-glass...
when fiddling around with 'dash-protectants'.
 
Last edited:
Try using steel wool with mineral spirits,and then a different piece of steel wool with your glass cleaner and dry with clean newspaper.that should do it! Only use steel wool if there is no window tint and make sure to get it plenty wet so it doesn't scratch. the abrasive in the steel wool will cut the product off the glass
 
wheelman302 said:
Try using steel wool with mineral spirits,and then a different piece of steel wool with your glass cleaner and dry with clean newspaper.that should do it! Only use steel wool if there is no window tint and make sure to get it plenty wet so it doesn't scratch. the abrasive in the steel wool will cut the product off the glass
Click to expand...
I have seen quad 0 SW put micro scratches on glass.
 
I just today received some CeriGlass so I will try that soon.

Bur for the record here's what I have tried so far:

Acetone: no
IPA @10%: no
Optimum Power Clean 1:3: no
Sprayaway: no
vigorous clay barring with ONR: no
mineral spirits: no
 
No update yet.

I will try to get some hand-applied CeriGlass going this afternoon to see if it cuts through the coating.
 
Small update. I used a little CeriGlass by hand on the car with less window spotting. It seemed to clear it up most of the way but there were still some faint spots.

I still intend to get in there with a new razor blade and see if it's just sitting there waiting for me to peel it off.
 
:wow: Tough Stuff. I would have thought it would have easily come off with some of the chemicals you used. Learn something everyday !!
 
Perl is pretty hard to remove as I found out as well. I was wearing glasses while applying Perl at 1:1 for my tires and while spraying it onto my applicator, a gust of wind swept by and I got overspray onto my face and glasses. Went to go wipe my glasses later with an alcohol wipe and its still there.
 
RAZOR BLADE!

I wish I tried it earlier. I put a fresh blade in my Snap-On scraper handle and had to hit the contaminated glass spots with a few passes at a pretty steep angle to bite into the stains. There was a slight residue left from the film (wiped away easily) but the blotches were gone.

I'm hoping the razor doesn't add any significant marring or scratches, but even if it does, it's better than very visible hazy splotches.

PERL will never get sprayed on anything but an applicator from now on!

Matt
 
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