One of the long time members here, David Uthe, used chalk on his linen for years to maintain his razor.

I have used an old piece of school blackboard chalk and rubbed it on my linen. It does work. One warning however. After you apply the chalk to the linen you need to rub the linen with something hard to break up the larger pieces of chalk. You can use either a glass bottle, butter knife or spine of a razor.
I would not suggest using the abrasive pasted linen every day. Only when the razor starts to pull.

As for using automotive compounds I would suggest using the finest abrasives. There is a rubbing compound (coarse) or a polishing compound (fine). I have not tried these so do so at your own risk.

Hope this helps,