rig grease
 

I had to store my guns in a storage building until my house was built. I pulled them out of storage today, Before I put them into my safe I wiped them down with rig grease. I was a bit nervous as they have not been opened since may. They were fine, I had a bit of white mold on one stock but the metal parts were in great shape. I can recomend rig grease to any one for long term storage.