I'm about to re-post this in the thread because it was suggested that it should be added here too. Sorry for those who have already read it.
My two cents:
The service department at my local dealership really like to talk about cars. Any cars. Actually, I've found them very knowledgeable about the VWs and wasn't surprised to find out that they knew alot about the EOS.
I was told that, need it or not, all EOS cars will be lubricated upon entering the service center as part of the regular maintenance schedule. You pay for an oil change, so they are going to do the oil on the seals too.
My service adviser was shocked to see me purchasing a bottle of the lubricant. He asked why I was spending the $80 when the shop will do it for me. He commented that the bottle would last me forever, as it was meant to be a shop stocked part for service department use.
Upon further talk, they were trained to use only a tiny tiny amount on the seals. Instead of a long line of lubricant all along the seal, they put only a small dot every few inches. Apparently, this is to ensure that there is not an "excess" of oil that might run onto paint or windows in a heavy rain.
The service guy's words, "better to do small amounts on a regular basis than too much once ni a while."
So, I guess it is a good thing to add to the lubricating your seals. Only use that much if the seals are really dry with lots of white showing. but a little less if they are mostly lubricated and just going after keeping them soft. Perhaps the oil will last longer after all.
Overall, however, I wanted to say that I was impressed with the people I've talked to in the dealership. I'm trying to generate the same rapport with them that Michael has with his; this is going to take time and a fair amount of friendly chatter (not to mention the $$$ I'll spend with them)
Cowell Motors is the name of the dealership, for those in the Richmond/Vancouver area. They are straight up and I'm happy with their service.
Also, as for the spray, oil, or grease... I have the grease and never applied it to the seals. I suggest using the oil (and only the oil) because it is easy to control. I'd be scared that a spray would end up all over the car. That's my opinion, and I've only oiled the seals once, so i'm really not an authority on this.
(side note: When I bought the grease, I saw how thick it was and was worried that it would behave badly with cloths or internal carpets. That's why I opted to buy the oil too)