Sound Encapsulation Panel Restoration

[matt87_300d]

Hello,

I finally managed to track down a set of the anti-noise / sound encapsulation panels that go underneath the engine and transmission on my 1987 300D. $650 always seemed like way too much money to pay--thank goodness for CraigsList!

I believe that the panels, when new, had some sort of coating on the inside surface, however on the panels I bought it is all corroded away by twenty years of aging and leaking, etc, so I can't really tell what material originally coated these things.

There are images of the new panels, with a foam-like coating at:
http://www.w124performance.com/images/W124_stuff/sound_panels/new_87_front2.jpg
http://www.w124performance.com/images/W124_stuff/sound_panels/new_87_rear.jpg

Has anyone ever attempted to re-coat these sound panels? What material and adhesive did you use? It would have do be something oil / transmission fluid / coolant resistant. Or does it really matter...should I just put them on as bare plastic panels?

Looking forward to a quieter idle!

--Thanks,

--Matt