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Diesel fell 2.4 cents to $3.886 a gallon, its first decline in four weeks, the Department of Energy reported Jan. 13.
Diesel had gained almost 4 cents in the previous three weeks of increases, and its current price is about equal to its $3.87 average of the past two months.
Trucking’s main fuel is less than a penny lower than it was a year ago.
The latest decline coincided with the lowest oil prices in eight months. Crude futures closed at $91.80 a barrel Jan. 13 and $91.66 on Jan. 9, according to Bloomberg News — marking the first times oil has finished below $92 on the New York Mercantile Exchange since May.
Gasoline, meanwhile, dipped a half-cent to $3.327 a gallon, also its first downturn in four weeks, DOE said following its weekly survey of filling stations.