Looks like those knowledgeable on the subject are all here!
I have a question: How to fill the occasional pothole on the 100 year old, quarter mile easement that five of us share? Neighbor who brought in a pickup load of gravel every spring to fill potholes, moved away. Another neighbor had a road crew repair the lane - vibratory roller etc, - after his construction traffic tore it up. But the potholes reappeared in the following winter.
A couple of years after that I graded it nice and smooth, and filled the potholes with gravel I had graded to level the surface. I thought I had compacted the holes sufficiently by driving the tractor over them. Nope. When the rains came it seems that traffic pumped the gravel/dirt mix out, and the same potholes reappeared. What can I fill them with, that will bind and stay put?