GLEN STUBBE � gstubbe@startribune.com -- South St. Paul, Minn. -- Monday, March 31, 2008 -- Bob Kantaris of Mason City, Iowa, filled up his 18-wheel rig with a livestock transport trailer, for the second time in two days. He filled the two 120 gallon tanks with 188 gallons of diesel at 3.919 per gallon for a total of $736.77 Monday at the Stockmen's Truck Stop in South St. Paul.