Mountain Top Fire Company was alerted at 19:30 hours for a tractor trailer vs. car in the area of S. Linnwood Dr and Tyrone Pike. Upon arrival of Chief 13-3 and Chief 13, found multiple vehicles off the roadway on the northbound berm and one tractor trailer up an embankment and blocking the northbound lane. Chief 13-3 confirmed only one minor injury. Upon further investigation, a possible fuel leak was found and crews began to mitigate the hazard. After containment it was found to be DEF fluid. Units performed traffic control running traffic in the southbound lane. After the tractor trailer was removed from the scene, the box was placed available. Assisting on scene was PSP, MVEMS, and Eagle Towing. Company 13 operated for 3 hours with 8 volunteers.