Diesel fell 1.3 cents to $3.993 a gallon, the fifth straight decline and first time it has been below $4 a gallon since January, the Department of Energy reported.
Gasoline also fell for a fifth week, dropping 3.5 cents to $3.645 a gallon, DOE said late Monday following its weekly survey of filling stations.
Trucking’s main fuel has declined 16.6 cents in the past five weeks, following a 26.5-cent increase in six straight gains. Gasoline has fallen 13.9 cents in the past five weeks.
Diesel’s national average price had not been less than $4 since Jan. 28.
Monday’s declines left diesel 14.9 cents below the same week last year, while gasoline is almost 30 cents below a year ago, DOE records showed.
Crude oil fell 16 cents on Monday to finish at $97.07 a barrel on the New York Mercantile Exchange, Bloomberg News reported.
Each week, DOE surveys about 400 diesel filling stations and about 800 gasoline stations to compile national average prices.