National average diesel prices took a 0.2-cent dip last week to $1.869 per gallon. Although this is the second week in a row prices slipped, it still marks a thin 0.5-cent margin from the record high that was set two weeks ago.

The most dramatic decreases appeared in regions that needed it the most— with the West Coast shedding 1.3 cents to $2.038 per gallon. California, which once again was the most expensive region to buy diesel, saw a relatively steep 1.2-cent decrease. The Lower Atlantic region is the cheapest to fill up, despite a 0.3-cent hike, at $1.818. The Rocky Mountain region tied Lower Atlantic for the steepest increase (0.3 cents), at $1.918.