|I believe you are supposed to use teflon based grease for carbon fiber drags. Shimano drag grease or Cals drag grease(cheaper than shimano's). That is what Alan Tani suggests, and uses himself. Other than that, I don't know if reagular grease would work the same or be useless/harmful. The drag grease might have a higher temperature tolerance, or it could simply be a gimmick. Good question though. If you look, there is some good info on reel maintnence. Especially on bearings and drags. If you can't find it here, check out the reel maintnence board at the Striper'sOnline forum(Alan's info is in a sticky at the top).