Black streaks from window rubbers?

[Supertramp]

Anyone have this issue? Every time it rains I get black streaks running down my nice white paint from the window rubbers, despite cleaning the bus a number of times.
Didn't notice this on my last one but it was Savannah Beige so either it was the colour or it didn't happen.

Looks bloody awful.

 

[madmike]

rubber gets old an does this,, product called,,,, 'Blackstreak remover' check a camper supply store

 

[Clem]

It's telling you to get new rubbers!

 

[Trikky2]

Try painting on a thin coat of waxoil or similar cavity wax and just leave it to soak in.

 

[matt-me]

or try this, it seems to help do the job but the rubbers were in reasonable nick on my old 69 beetle.

http://www.autoglym.com/products/products/vinyl-and-rubber-care" onclick="window.open(this.href);return false;

 

[Supertramp]

Thank you. Going to have to be a temp fix as listed above until after my travels when I'll renew the window rubbers. Lovely job that is.