I like Bowman anti sieze, but it ain't cheap.

Grease is for moving parts, anti seize is for non moving parts. One of the main ingredients in most ainti seize compounds, moly, will continue to "lubricate" even if dry.

Good news though, a can will last a very long time. The one I have is probably 25 years old and still going strong. I use it on car, truck, motorcycle, bikes, anything I happen to be wrenching on. Just paint it on with a flux brush, or the brush in cap. Don't need much!