Sorry guys, but this seems a bit too underhanded for my taste.

If fuel prices are rising, why not just up the total price you charge for a job instead of adding surcharges here and there? I would think it's normal that prices rise as the cost of doing business goes up.

When and IF the fuel price drops, then the rate you charge can drop in proportion, no?

No offense, but this has always kind of 1) riled me and 2) made me scratch my head in confusion.