Originally Posted by
TandemGeek
Hmmmm... that depends:
From October 11, '05 VeloSooze Technical Q&A with Lennard Zinn
That said, I have found that we needed to use Tacx Dynamic Paste and/or FSA's Carbon Assembly Paste on the seat posts that went into our carbon frames. Therefore, I can appreciate that had I used grease on any of our composite framed bikes the seat posts would have likely twisted and/or worked their way deeper into the seat tubes during the subsequent ride.
That was an interesting article. I didn't know that Calfee uses fiberglass sleeves as seat tube shims. The dissimilar materials explanation makes a lot of sense and is a no-brainer. I know there are those special "gritty" grease you mention that can be used on carbon seat post. I also know that I spent the better part of a 600k continually re-adjusting my seatpost after my LBS greased it, not a whole lot of fun.