Just thought i would pass on my experience of this brilliant product, its used to condition Door rubbers/seals etc, it also has the added bonus of preventing the rubbers from freezing and making it sometimes near impossible to open the car in the colder months .
I know a few users report issues with squeaky door rubbers on the MK5, well this product may just help you, i have used it for a few years now and on cars that are renowned for having this issue and i have never had the squeak problem so i guess it works, i also find it keeps the rubbers looking better, whilst it also prevents the rubber from cracking, and help maintain its original shape which helps keep the door sealed properly, its also reasonable at about £5.95 a bottle, its also very easy to use as it has a built in sponge applicator, you just rub it on an let it do its magic
the official info
Rubber Protection "Gummi Pflege"
• Special conditioner for rubber door and trunk seals ("weather-stripping").
• UV and anti-freezing protection. Prevents doors from sticking to body in cold temps.
• Not a dye or dressing. Rejuvenates colour, maintains elasticity for longevity.
• Easy and quick to apply. No-mess built-in applicator sponge.
Long-lasting protection against freezing for rubber seals on car doors, windows and boots. Protects and keeps the rubber elastic. Restores color to dried out rubber. Protects against extreme temperature and UV rays. Solvent-free, water-based formula. Easy-to-use shoe polish type applicator makes application simple without the mess.