PALO ALTO, Calif. – As the average cost of regular gasoline continues to decline year over year, the price of diesel fuel is falling as well. In fact, U.S. diesel prices are down more than 25 cents since January.

Combined with higher gasoline demand, in many states the two fuels now cost nearly the same price per gallon, with the smallest difference in price of the past six years, writes Green Car Reports. 

According to reports from other news outlets, diesel prices could continue to fall in the coming weeks of high travel, possibly even getting as low as gasoline prices, which increased 55 cents per gallon to a national average of $2.77 last week, according to AAA. The average price for diesel was $2.85 per gallon, down 27 cents.