St. Louis spends a good portion of winter sitting at below freezing, except for 10 minute periods of 33F during the middle of the day. This means it snows, and gets on your car. Then it melts a tiny bit during the day, permeates through the lock, and then refreezes. You can keep deicing, but each day, new water will come back into the lock, and then refreeze. Maddening. I spent a few weeks last winter with a small propane torch in my bag. I'd whip it out, blast the lock for a few seconds (keeping the actual flame tip off the lock, just hitting it with the hot air), and it would open right up.

Annoying, but it did work. I couldn't find any reliable way to prevent it from happening...

peace,
sam

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"That f***in' biodiesel is makin' me hungry."

1982 300TD Astral Silver w/ 250k (BIO BNZ)
2001 Aprilia SR50 Corsa Red w/ 5.5k (>100 MPG)