Originally Posted by
Moe Zhoost
I use marine grade bearing grease for most everything and have never had an issue like yours. To have enough corrosion in just a few months to cause the post to seize sounds implausible. Perhaps it was the wrong diameter post, crimped or ovalized DT, or bent post.
I've seen it happen - alu post, steel frame combination. In a matter of a few months in not too humid environment. Unless the customer was lying, but the bike did look freshly painted and the seat post did look like new.