The lenses are made of PLASTIC. It won't stay clear, the Sun, weather and dust will eventually make them opaque.

Our MB club went to the dealer last year and this salesguy was blathering on about how glass lenses became opaque and the new MB lenses were "polycarbonate" and would stay clear forever. Another popular word for plastic is resin. There are many kinds of plastic, but none of them is harder than glass, so far as I know, at least none that is transparent.


The parking lot was full of examples of how untrue this is, so I didn't say anything. The plastic on my 90 300E gradually became opaque and then began to flake and fall away. The plastic on the 85 is a lot better, but was still not shiny or clear after 20 years.

I put Depo's on the 90 and some offbrand Taiwan lamps on the 85, and both look a whole lot better. The workmanship is admittedly rather Detroitish and not up to Bosch standards, but the lights are brighter and a lot more attractive, and they won't go opaque unless someone snadblasts them or perhaps squirts hydroflouric acid on them, which I deem very unlikely.

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Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)