Question: is wd40 ok for locks?
Answer: This is what we find works best to keep your lock in its best working condition lubricate the lock cylinder. Do not use WD-40, WD-40 is a solvent, not a lubricant and will, in fact, remove any type of lubricant that is in the cylinder. Use a lubricant that has a silicone, graphite or Teflon base only.