Lock Lubricant Guide: Choose the Right One & Avoid Mistakes How to Grease a Car Door, Hood, Lock, and Latch Family Handyman How to lubricate and assemble the Shadow+ lock mechanism in a bicycle rear derailleur., Have you ever serviced the Shadow+ lock mechanism inside your bicycle rear derailleur?, Proper lubrication and To keep your door hinges and locks operating smoothly and quietly, regular lubrication is essential. Here's a professional tip for effective maintenance: Recommended Lubricants: For Door Hinges: Use a silicone based lubricant or Lubricating Locks to Prevent Getting Locked Out in the Cold How to Lubricate a Lock: The Best Lubricants to Use