Window rubbers - what product?

[jan]

Does anyone know how to treat hardened window rubbers (windscreen/rear window)? Would silicone grease do the trick, or is it better to use another product to soften them again? Thanks for any suggestions.

[Phil Nottingham]

;)Holt's did a version which sealed leaking screen rubbers by softening them - it does work but is messy. Any grease or glycerin would work for a time but it will only delay the enevitable replacement. It will advance the rotting process

Leaking rubbers on P5's can do untold and unseen damage until its too late

[Geoff Arthur]

I used the Holts stuff on my Coupe rear screen last year and wish I had never done so. It may or may not seal the leak but it creeps out everywhere and I keep having to clean it off using white spirit. If the rubbers are duff then they need to be replaced as I have just done on my P5B saloon but it is not a job for the faint hearted. As Phil said, leaking rubbers can do untold damage and even wreck a good car. Where in the UK are you?

[Kev]

We'll ive used a Holts product recently on my Coupe that claims to sofen the rubber slightly, and recolours it a bit, used it by spraying it on a cloth and wiping it on, not spraying and getting it everywhere.It wasn't bad but nothing will bring it back to it's original softness.
Kev.

[Smallfry]

Waxoyl will soften the rubbers, but I dont know if there will be any long term benefit.