Cleaning the Plastic Rear Window

To say my rear window was dirty was an understatement. Honestly, I can’t remember ever washing it in the time I’ve owned the MZ3. It had gotten to the point that rear visibility, especially with the windscreen, was zero. With the homecoming approaching, I figured it was time to clean this window. Turned out to also be a good time to try out the Meguiar’s window cleaner and polish to see just how good this stuff is.

In the graphic below, the top picture is of the window before I did anything (except remove the windscreen). The middle picture is after I used Meguiar’s #17 Clear Plastic Cleaner on both the inside and the outside. The cleaner was difficult to use, especially on the inside. This stuff coats on then dries to a paste just like car wax does. Rubbing off that dried pasty/wax was difficult especially when trying to work on the inside of the window. It took me about 30 minutes but the results were simply amazing. Except for a harsh black line of buildup in a fold mark, it removed everything.

The next step was to use the Meguiar’s #10 Clear Plastic Polish, I had already decided I was not going to mess with the inside window since my back was aching from the cleaner. But honestly it wouldn’t have been very hard since the polish doesn’t dry to a paste like the cleaner. The polish took the buildup in the fold line off with very little effort. The very bottom picture in the graphic below was after the cleaner and the polish. Looks like a practically brand new window as far as I am concerned. I’m very pleased with the Meguiar’s cleaner and polish, however I think I’ll clean and polish the window a little more regularly from now on.

I’ve seen BMW dealerships sell some of the Meguiar’s products in their parts department. But if you are having a hard time finding them you can always purchase directly from Meguiar’s. Meguiar’s has a web site with a dealer locator, but you have to call the number below to actually place an order.

To Order Call: 1 (800) 545 3321

Fax: 1 (949) 752-6659

Or Write: 17991 Mitchell South, Irvine, CA 92614

One thought on “Cleaning the Plastic Rear Window

  1. Velo Buff

    Thanks for the pics of your window. I was researching what to fix scratches in my Jeep Wrangler’s plastic soft top windows and I think I’ll give Meguiar’s a shot!

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