You should not use WD40 on your door locks. It flushes out the dry lubricant used in locks. Ask any locksmith. Most of those lock deicers are bad as well, they do the same thing. I guess WD40 would be better than the deicers because it has its own lube. Use graphite or Molybdenum based powder lubes and you will not have frozen locks to begin with.
Last edited by Norm; 01-29-2004 at 10:25 AM.