Schlage recommends a dry graphite lube. Dry graphite lube is a high-lubricity graphite that adheres to most surfaces with minimum surface preparation. It air dries rapidly at room temperature to provide clean, long-wearing lubrication.
The frequency of lubricating a lock cylinder depends on usage and environment. Lubricating every five years is adequate under normal conditions and use. Lubricate a cylinder if the key insertion/extraction becomes rough or more difficult over time. The following conditions might affect the frequency of application:
Indoor applications typically require less maintenance than locks exposed to harsh exterior environments
For latches, try a 3-in-1 dry lube to help keep your latches working smoothly. A graphite-based grease will work as well. Stay away from any penetrating oils as they tend to remove the factory grease from the locks and potentially dry out the mechanics.
INFORMATION PROVIDED THROUGH THIS SITE IS PROVIDED TO YOU AS IS WITHOUT ANY EXPRESS REPRESENTATIONS OR WARRANTIES OF ANY KIND, AND WE MAKE NO REPRESENTATION OR WARRANTY THAT THIS SITE(OR ANY INFORMATION PROVIDED IN RESPONSE TO YOUR INQUIRY), WILL BE ACCURATE, COMPLETE, OR ERROR-FREE.
YOU AGREE THAT YOU MUST EVALUATE ALL INFORMATION AND RESPONSES, AND THAT YOU BEAR ALL RISKS ASSOCIATED WITH, THE USE OF THIS SITE, INCLUDING ANY RELIANCE ON THE ACCURACY,COMPLETENESS, OR USEFULNESS OF ANY INFORMATION OR MATERIALS MADE AVAILABLE THROUGH THIS SITE.