leather issue

[schummer]

Any suggestions on how to clean the light cashmire leather? The left side of the drivers seat is looking dirty and worn at 3000 miles. I have read that other people are having the same problem. I have used miguires leather wipes on the seats, I tried miguires leather cleaner/conditioner on the dark stained areas but it does nothing. Guy at auto parts store suggested a leather cleaner for coats/shoes...help?