Gasoline and diesel fuel prices have come down slightly after reaching all-time record highs in March, according to www.fuelgaugereport.com, a service of the American Automobile Association (AAA).
As of Friday (March 28), the national average price for self-serve regular unleaded gas was $1.656 per gallon, compared with $1.663 on Thursday (March 27) and $1.666 on Feb. 28, according to the AAA.
A year earlier, the national average price per gallon for self-serve regular unleaded was $1.35.
The all-time record high, not adjusted for inflation, for regular unleaded was $1.722 a gallon set on March 18, the day before the war with Iraq began.
Meanwhile, the national average price for diesel fuel was $1.735 a gallon on Friday, compared with $1.746 on Thursday and $1.767 on Feb. 28.
The all-time record high price for diesel fuel was $1.829 a gallon set on March 15.
A year earlier, diesel fuel cost $1.338 a gallon.
California had the highest prices for gas, with an average of $2.168 per gallon, as of Friday. Diesel fuel cost an average of $1.966 in California as of Friday.
Gas also cost more than $2 a gallon in Hawaii and Nevada on Friday.
The lowest gas prices as of Friday were found in Oklahoma, where it averaged $1.474 a gallon. Diesel fuel cost an average of $1.464 a gallon on Friday.
The AAA compiles its averages based upon credit-card swipes at 60,000 gas stations across the country.
Despite the downward trend, the Wall Street Journal reported on Friday that gas prices could, temporarily, spike higher in the coming weeks as refineries and retailers switch from winter blends to lower-emissions summer blends.
Refiners and retailers in larger urban areas want to basically empty their inventories of the winter blend by the time they need to start selling their summer blend. The switch to summer blend gas is required by the federal government to reduce auto-exhaust related pollution during the summer.