Diesel prices have been taxing for onsite installers and anyone else who depends on diesel-powered equipment and trucks. From July 2007 to July 2008, the national average price of diesel fuel in the United States increased 65 percent from $2.89 to a record $4.76 per gallon before dropping slightly a week or so later.And forget the traditional price advantage that diesel once had over gasoline. During midsummer, peak-demand time for many installers, the average retail price of diesel was 66 cents higher than that of regular gasoline. The reason for the rise in diesel prices comes down to supply and
