We all know about the old timers trick of putting mothballs in your gas tank and the edge it gives you when racing, but be carefull how you handle them! both my self and my wife Kathy (Krazy Kate)became extreamly ill after handleing them. Kathy remains ill, her white blood cell count has become very low and she has flu like symptoms. The doctors say that there is NO treatment for this and only there is a small chance of her condition improving. I saw several racers using mothballs at the day of the drags... I would not wish this condition on anybody!!