To prevent SKS locks from freezing up due to low temps or dirt.
Prevent locks from holding water that may freeze in low temps, we recommend the use of a industrial grade dry lubricant formulated for extreme cold temps.
Such products can be found on Amazon or your local hardware store.
One good choice is : B'laster 8-GS Industrial Graphite Dry Lubricant.
Warning: lubricants can be messy and will stain your clothes if you are not careful.
If you are faced with a frozen stuck lock due to low temps:
If your lock is frozen and stuck you can use an aerosol de-icer to remove ice from within the lock core.
You can keep a small can of this with your car; Victor Lock De-Icer Lubricant Aerosol.
Alternatives to carrying de-icer:
Apply hand sanitizer to your key.
Hand sanitizer contains alcohol, which is useful for melting away the ice in your keyhole. Squirt a small amount of hand sanitizer onto your key. Then, gently insert the key into the lock and unlock the door. If you use hand sanitizer too frequently, you will eventually get sticky locks.
Heat up your key.
Use a lighter to warm up your key. Hold your key over the flame of the lighter until it warms up. Then, insert the key into the lock. The warm key should help melt away the ice in your lock.
Blow on the lock with a straw.
Place one end of a straw on the lock. Hold the other end of the straw in your mouth. Blow warm air into the straw. The heat from your breath should eventually melt the ice in the car lock.
DO NOT POUR HOT LIQUID ON YOUR LOCKS.