I have a 1994 convertible with a plastic rear window, and it has 13 years of dirtiness on that thing. There is a bunch of ugly what I presume are scratches all across teh middle (probably from the folding process).Also, there are little almost transparent white circles (you have to see them from an angle though)... that are also really annoying.Can you identify what those circles are??I've tried meguire's plastx polish...and even some white vinegar distilled in water.Currently, im looking for a more aggressive product.
I agree with John Paul. No matter how much you try to refurbish it you'll still notice all of the blemishes that bother you.
when mine did that i spent a year and a lot of cash tryin to fix it in the end i realized i should of just replaced it to begin with. If you decide to replace it, you might have to do the whole top, but its worth it. Just make sure that when you do replace it to look for a company that makes one with a GLASS rear window. You be glad you did. I am.
In some cases (not all) plastic can be restored using Noxema. Yes skin cleaner. It has stuff in it that gets down into the scratches, and cleans them very well. It has a very mild abrasive in it which will aid in removal of minor scratches. The best part is that you can snag a small amount from a wife, daughter or sister for free and try it to see if it will work on a small area before you go out and buy it yourself. I've never used it on rear convertible windows before, but I have used it on instrument clusters, and stereos with great results.
Each top is different Mazda Miata for example you can replace just the plastic window. Quit messing around go to the trim shop and have another top put on or a new window sewn in. Trust me that is the only way and when you fold place a towel on the window both sides to protect it from wrinkles and scratches. Convertable tops are good for about 3 to 4 years then the plastic becomes brittle.
wipe dry after soap-spongin. redecorate with whatever colours, patternsdesigns u like with acrylic paints or use stickers add junks to revamp for better style