The U.S. average retail price of diesel increased 1.1 cents to $2.597 a gallon, according to the Department of Energy, as more U.S. wells came online and the price of oil slipped.

The U.S. average retail price of diesel rose 4.6 cents to $2.586 a gallon, according to the Department of Energy, as the price of oil rose past $55 to an 18-month high, then fell later in the day Jan. 3.

Truckers filling their tanks with diesel in Michigan are paying 11.3 cents more per gallon in tax than they did last month as part of a 2015 law designed to eventually produce $400 million for the state’s roads and bridges.

The U.S. average retail price of diesel jumped 1.3 cents to $2.54 a gallon, according to the Department of Energy, as the price of oil rose past $52 a barrel as plans to cut production gelled.

The U.S. average retail price of diesel jumped 3.4 cents to $2.527 a gallon, according to the Department of Energy, as the price of oil hovered near $52 a barrel.

Pennsylvania truckers, who already pay the nation’s highest diesel fuel taxes, won’t be happy when they fill their vehicles after the New Year. That’s because on Jan. 1 that tax will rise from 63.87 cents per gallon to 77.59 cents per gallon.

The U.S. average retail price of diesel rose 1.3 cents to $2.493 a gallon, according to the Department of Energy, as the price of crude oil reached its highest level in about 17 months as producers added to earlier announced production cuts.