Grease for seatpost?

I like plumber's silicone grease for this type of application. It is waterproof and not messy (clear and rather "sticky"). I found it at Ace Hardware.
 
The purpose of greasing the post is to prevent corrosion, and galling adhesion with aluminum against aluminum. A basic grease will do the job. Avoid the super slick additive greases because they can cause the post to slip when your backside hammers the seat on a rough road.
 
What the others said. Pretty much any grease will do the trick.

Little mechanic's and bike tourer tip: deposit a blob of grease inside the bottom of the seatpost. That way you'll always have some available in case you need it on the road.
 
Back