Best lube for old barn doors?

[DogwoodTales]

In short I bought a place with a pole barn and the old door tracks, while they operate without issue, could still use some lubricant. Probably haven’t been lubed since the barn was built 30 years ago.
Lots of options out there. What works best from your experience?
Thanks!

[Snipe Hunter]

Good old fashioned axle/bearing grease

[Gary G™]

I’m a Kano fan—all their lubes, degreasers, and rust removers work great.
Lubricone Dry Silicone would probably work great.