The U.S. average diesel fuel price increased 1 cent from last week to $3.27 per gallon on September 17, 2018, 48 cents higher than a year ago. Gulf Coast prices rose nearly two cents to $3.06 per gallon, Midwest prices increased over a cent to $3.21 per gallon, West Coast prices increased nearly a cent to $3.76 per gallon, and East Coast prices increased less than a cent, remaining at $3.25 per gallon. Rocky Mountain prices decreased less than a cent to $3.36 per gallon.
The U.S. average regular gasoline retail price increased nearly 1 cent from last week to $2.84 per gallon on September 17, 2018, up 21 cents from the same time last year. Midwest prices increased over two cents to $2.76 per gallon, West Coast and Rocky Mountain prices each rose nearly a cent to $3.34 per gallon and $3.01 per gallon, respectively, and East Coast prices increased less than a cent, remaining virtually unchanged at $2.79 per gallon. Gulf Coast prices decreased over a cent to $2.56 per gallon.
U.S. propane/propylene stocks increased by 0.1 million barrels last week to 74.8 million barrels as of September 14, 2018, 9.5 million barrels (11.3%) lower than the five-year (2013-2017) average inventory level for this same time of year. Midwest and East Coast inventories increased by 0.4 million barrels and 0.1 million barrels, respectively, while Gulf Coast inventories decreased by 0.3 million barrels and Rocky Mountain/West Coast inventories decreased slightly, remaining virtually unchanged. Propylene non-fuel-use inventories represented 2.4% of total propane/propylene inventories.