Several weeks ago I answered a letter in this column concerning removing hard water scale build up in plumbing supply pipes using muriatic acid and potassium permanganate. I discouraged the practice, ...

Q. My driveway has unsightly rust stains, which I have tried to remove with standard driveway cleaners without success. Do you know of a cleaning method that would remove these stains? A. Mild rust ...

Well, dang it, the stupid funnel filled up too quickly while you were pouring in your 10W-30, and some spilled, missing the drip pan you'd set down. Act fast if you don't want that fresh premium ...