The national average diesel price dropped 1.1 cents to $3.768 a gallon, according to U.S. Energy Information Administration data released July 29.

The national average diesel price dipped 4.7 cents to $3.779 a gallon, according to Energy Information Administration data released July 22.

The national average diesel price dropped 3.9 cents to $3.826 a gallon, its first decline after four straight gains, according to Energy Information Administration data released July 15.

The national average diesel price rose 5.2 cents to $3.865 in its fourth consecutive increase, according to Energy Information Administration data released July 8.

The national average diesel price jumped for the third straight week, this time leaping 4.4 cents to $3.813 a gallon, according to Energy Information Administration data released July 1.

The national average diesel price edged up for the second consecutive week, a 3.4-cent bump to $3.769, according to Energy Information Administration data released June 24.

The national average diesel price reversed course and swung up 7.7 cents to $3.735, ending nine straight declines, according to Energy Information Administration data released June 17.

The national average diesel price keeps dropping, decreasing 6.8 cents a gallon to $3.658, according to Energy Information Administration data released June 10.

The national average diesel price extended its downward movement, shedding 3.2 cents a gallon to $3.726, according to Energy Information Administration data released June 3.

The national average diesel price dropped 3.1 cents to reach $3.758, its lowest point in more than two years, according to Energy Information Administration data on May 27.