The ultimate in fuel efficiency. The Mack HE Package combines our #MP8HE engine and a host of aerodynamic and fuel economy features to minimize drag, maximize profit, and increase fuel efficiency up to 9.5%. | Mack Trucks

Two drivers face off with the most fuel-efficient engine we've ever built. | Mack Trucks

We are excited to announce a new reset tool for '21-'23 Volvo and Mack engines! With this new tool, you can: ✅ Reset active and inactive fault codes -- no more pesky dash lights. ✅ Reset aftertreatment -- including resetting soot levels for DPF filter changes and SCR / DEF derates. ✅ Forced DPF regen -- when the soot level is too high for a parked regen, a forced regen is necessary. The OTR Reset Tool allows you to initiate this process, typically only available from repair facilities. What engi