DETROIT AAA Michigan says gas prices have dropped 8 cents over the last week, putting the statewide average at $3.74 a gallon.
The state auto club said Tuesday that of the cities it surveys, the cheapest price for self-serve regular fuel is in the Saginaw/Bay City area, where a gallon costs $3.68.
The highest average can be found in the Marquette area at $3.93.
The statewide average for biodiesel is $4.31 and $3.27 for ethanol.
AAA surveys 2,800 Michigan gas stations daily.
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