I have a gravel driveway in good shape except for one area. This area has two strips of gravel with grass in the middle. The left side of the strip erroded away making it uneven for about 20'. I know run off from the house is causing the problem but I can't fix that now. I need a quick fix before winter. I've used small limestone gravel (sharp edges) before but it washes away with the snow melt. Someone suggested mixing granite sand with the gravel but I can't find it anywhere. Apparently the sand binds like cement when it gets wet. My thought was could I spread a little driveway sealer on the exsisting gravel and cover with new gravel. Kind of a chip and seal repair. Any thoughts?