I read this:

Take them apart clean the inside of the lenses with Berryman carb cleaner (this brightens up years old yellowed plastic to look like new and smooths out the fine road grit pits in the outer plastic that reduce the light projection)

and wonder if you clean the lenses inside AND out with the carb cleaner. Also, is there something important about Berryman's, or will my Brand "X" work OK.

Many thanks,

Bob

:>)
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240s: 1986 244GL, 1988 244GL, and 5 others.