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2008 E350 4Matic, 1991 300SL, 2004 Volvo V70 titainium edition
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109 Posts
Discussion Starter #1
The plastic windows in my 91 300SL soft top are very cloudy and have yellowed. One of them has developed a small 1/4" crack on the edge. The canvas top is like new. Is there a product that will clear these up and is there some proven way to stop the crack from growing? Thanks
 

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1999 SL500 Sport, Black Opal Pearl, Helios Leather, Pano roof, AMG Aero2 18"Split Rims, Rear Seats
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1,207 Posts

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2000 SL500 Mineral Green
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222 Posts
Try Pledge furniture polish (NOT with lemon scent).
It can remove yellowing in some cases and will soften the plastic.

Clear package sealing tape might work on the window crack, but probably not. Worth a try. Applying 303 to protect it from UV might improve the chances for it lasting.

Herb
 

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16 W205 C250D estate, 92 R129 SL500, 2001 C240 wagon
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87 Posts
Meguiars polish

Yep I've used this Meguiars PLASTX Cleaner and Polish on my '92 rear window, which was looking fairly cloudy, and the transformation was amazing. Almost all the window is perfectly clear, just a little still at the points of maximum flex.
It uses some cunning technique to fill tiny cracks with an optically clear material so it looks great. Also gets off tarnishing. Use it several times, gets a bit better.
I have a small crack too, but not growing much, so will hold off as canvas still original looking. I've seen recommendations to use a towel rolled up and dropped in part way closed as a bend-limiter when storing the top for a while, which seems a great idea, as a couple of spots get folded quite tightly.
Greg
 

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2000 SL500 Mineral Green
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222 Posts
Do you have an item number?
I went to their web site and did not see anything identified as Window Polish, only something for a prep to use before applying vinyl paint.

Herb
 

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2000 SL500 Mineral Green
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222 Posts
Sorry, found it with a search -- SKU 384-100 or 30 depending on size container. It's Renovo, which is also available in US, and has been mentioned here previously.

Herb
 

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2008 E350 4Matic, 1991 300SL, 2004 Volvo V70 titainium edition
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109 Posts
Discussion Starter #8
Thank you all. I will give it a try.
 

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2009 SL550 Silver Arrow Launch Edition, 2013 Mercedes Benz C300 4Matic
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986 Posts
"Mother's" Plastic window cleaner works well for me.
 
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