First off carbon paste is not a lube.
Carbon parts will not seize to other materials which is the main reason you use to lube up your seat post.
The use of carbon paste is to aid in adding friction to carbon parts which allows you to tighten the bolts to proper torque and not have parts slip and the need to over tighten, the added friction keeps parts from slipping.
I'd suggest using it for any carbon parts you need to tighten and keep in place.
I might add why even think of using grease on carbon when carbon paste is designed for it?
Last edited by JTGraphics; 04-19-11 at 04:35 PM.