Gas prices are still dropping, but what are you really pumping?

Gas prices are continuing to drop -- 20 cents a gallon cheaper than in the beginning of May -- but what we're getting at the pump is in question in some places.

Contaminated fuel -- which can foul an engine -- was the subject of a warning in Ohio recently. And the Pennsylvania Attorney General's Bureau of Consumer Protection is reporting an increase in reports from drivers there having problems with contaminated gas.