I believe that Steve generally recommends Tri-Flow for the lock cylinder
itself.  Of course the main resistance may be at other parts leading to the
latch mechanism where there is typically heavier grease which may have
gotten dry and thick with time and worse at low temperatures.

Larry A.
45F this morning in W. Mich.

On Fri, Oct 16, 2015 at 9:38 AM, Marc Perdue <mcperdue@gmail.com> wrote:

> Hi all,
>
> This may or may not relate to Vanagon locks, but specifically, the
> door locks on the outside of my 1995 Toyota T-100 truck have started
> to get really stiff as the weather's gotten colder. I'm afraid I'm
> going to break off the key in the lock. Now the first thing most
> people would probably do is grab the WD-40, but I wanted to check and
> see what is the best cleaner/lubricant for door locks?
>
> Thanks,
> Marc Perdue
>
> PS--After 3 months, my van is STILL in the shop in Staunton. He claims
> that he has at least pulled it into the shop and is overhauling the
> engine.
>