The average price of retail diesel fuel fell 0.1 cent from a week ago to $3.308 a gallon, the Department of Energy said Wednesday.
The decline marked the fourth straight since diesel peaked at an all-time record $3.444 a gallon on Nov. 26. Since then, trucking’s main fuel has declined 13.6 cents.
Regular gasoline, meanwhile, fell 1.8 cents to $2.98 a gallon, marking the sixth straight decline since gas hit $3.111 on Nov. 12, the highest in five months.
Average diesel prices fell in three of five national regions — the East Coast, West Coast and Rocky Mountains — while rising in the Gulf Coast and Midwest.
Only the Rocky Mountains saw a change of more than a penny, dropping 5.1 cents to $3.266 a gallon, according to DOE figures.
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The department released the price survey on Wednesday this week because of the Christmas holiday.
Each week, DOE surveys about 350 diesel filling stations to compile a national snapshot average price.