The 1992 truck has Leffler markings on the doors but not on the tank.
The truck was last seen parked at a fuel station on North Sixth Street in Denver, Pa.
The alert went out on Monday when a driver noticed the truck was missing. The truck was carrying about $3,500 worth of a low-sulfur fuel.
The truck is valued at $25,000.
Information from: WGAL-TV, http://www.wgal.com
