I bought my 1999 VX used about a 2 years ago. It's got almost 100,000 miles. Not too long after I bought it I realized it was using about 1 quart of oil every 500 miles or so. It is not leaking at all and I know it's burning the oil because the end of the tail pipe has black stuff on it. I recently started putting Motor Honey in it and it has seemed to help slow the oil usage down. Does anyone else have this problem or any suggestions?