Originally Posted by Tundra_Man

I just got back from the LBS. A co-worker wound up hauling me and my bike there rather than making my wife come, and in return I bought him lunch.

Apparently I hit a rut or something big enough to break the bead on the tire, and had a slow leak. The LBS just re-seated everything and tested for leaks and everything looked good. They threw in some extra sealant just to be safe. They even cleaned and lubed my chain and didn't charge me for any of it. Then I rode the bike back to the office and everything held fine.

I'd only had the tires converted to tubeless for about three months, so I doubt the original sealant had gone dry in that time. I'm not sure what kind they use, but they're used to dealing with bikes in our climate so I'm sure they've figured out what works well. I remember them saying that the sealant they use does pretty good down to about -20F.