rubber gasket care

I use this, great stuff:

Honda shin etsu grease, one tube is enough for a lifetime.

http://www.handa-accessories.com/shin.jpg

 

For most of the rubber I use a product called Zymol Seal which is pretty good. For the targa top front seal I coat it in silicone grease. This does give a rather strange appearance as it looks permanently wet, but it makes the roof much easier to slide in at the front and protects the priceless "no longer available" seal.

 

"For the targa top front seal I coat it in silicone grease."

+1;

it also reduces/eliminates squeaking caused by the parts "working" as you go over bumps/uneven surfaces.

 

back in my old 2002 days, the bmw factory recommended pure glycerin on all
weatherstriping.

 

I've been using straight glycerine for years. It's cheap and it works.