Hi:
The side panels are also MBtex vinyl, and the Lexol Vinylex works great on them as well. I used the MB vinyl cleaner, which is made for MB by Meguir's, but the vinylex is better IMHO. Everything else I use on the car finish is a Meguir's product, but the MB vinyl cleaner didn't clean as well as the vinylex, didn't last as long between cleanings, and each time I used it a sticky "fog" developed on the inside of the windows a couple of days after use. I haven't seen that problem yet with the Vinylex.

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JCE
87 300E, 65k miles
Smoke Silver