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Letter: Letters: Dirty films

Published 2 April 1994

From PAUL IRELAND

Q: When I clean the inside of my car windows, I notice that they are
covered with an oily film that leaves a noticeable black residue on the
cleaning cloth. Have others noticed this buildup on their car windows, and
can anyone suggest what might be causing it?

Paul Ireland Colchester, Essex

Issue no. 1919 published 2 April 1994

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