Lubricating door locks

I saw some horror posts about lock actuators failing and it made me want to lubricate them. Only question is how and with what?

I was thinking silicone or graphite but I'm really not sure.
Maybe someone can enlighten me on the best locations and methods to lubricate them to prolong the lock actuator life.

Thanks!

Originally Posted by midnitemyst

I saw some horror posts about lock actuators failing and it made me want to lubricate them. Only question is how and with what?

I was thinking silicone or graphite but I'm really not sure.
Maybe someone can enlighten me on the best locations and methods to lubricate them to prolong the lock actuator life.

Thanks!

I have used both. Silicon will not damage the paint, the way graphite could and did on one of my cars a long time ago.

Since my cars have been garaged for many years now, I don't bother with it any more.

Reason I did in the past was to prevent freezing of the lock mechanism. I used to be stationed in cold winter places such as Ankara, Turkey and Keflavik, Iceland.