The nationwide average retail price of diesel fuel declined by almost 4 cents per gallon on April 6, knocking trucking’s main fuel more than 50 cents lower than the same time a year ago.

With jets grounded and cars parked, diesel fuel for trucking is giving some relief to refiners as the coronavirus spread cuts deep into demand.

The U.S. average retail price of diesel fell 7.3 cents to $2.586 per gallon, the Department of Energy reported March 30.

The nationwide average price of diesel fuel declined by 8 cents per gallon March 16, according to the U.S. Energy Information Administration.

The U.S. average retail price of diesel fell 3.7 cents to $2.814 per gallon, the Department of Energy reported March 9.

The U.S. average retail price of diesel fell 3.1 cents to $2.851 per gallon, the Department of Energy reported March 2.

The price of diesel fuel declined 4.6 cents a gallon nationally Feb. 10, according to the U.S. Energy Information Administration, dipping to $2.91 a gallon from $2.956 the previous week.

The U.S. average retail price of diesel fell 5.4 cents to $2.956 a gallon, the Department of Energy reported Feb. 3.

The U.S. average retail price of diesel fell 2.7 cents to $3.037 a gallon, the Department of Energy reported Jan. 21.

The U.S. average retail price of diesel fell 1.5 cents to $3.064 a gallon, the Department of Energy reported Jan. 13. Oil plunged more than $5 a barrel as fears of war with Iran faded.