Is there a locost knack to bringing back old, dirty indicator lenses?

Steve

Dishwasher....

T-cut or brasso outside and used with a toothbrush inside.

[Edited on 22/8/09 by Dusty]

Denture cleaning tablets -- picked up the tip from a Mondeo forum perfect for cleaning mk1 Mondeo inner plastic headlight lenses -- worked on the one I tried it on which were grotty.

I used brake cleaner