The Volvo D13F engine with electronic unit injectors, a cooled Exhaust Gas Recirculation (EGR) system, a Exhaust Aftertreatment System which includes a Diesel Particulate Filter (DPF) and the Holset Variable Geometry Turbocharger (VGT). The Volvo Engine Brake is optional. The engine conforms to year 2007 Environmental Protection Agency (EPA) requirements. The D13F EGR system features reduced restriction plus enhanced efficiency and reliability. Its venturi system is easy to service. A Exhaust Aftertreatment System requires elevated exhaust temperatures. The system uses a diesel oxidation catalyst, a diesel particulate filter and in-line reheating of the exhaust gases. The DPF system removes Particulate Matter (PM) from the exhaust to conform to the 2007 EPA regulations. The Holset VGT features fixed vanes with a sliding nozzle ring. The nozzle position is infinitely variable between open and closed. This design reacts quickly to exhaust pressure and controls inlet pressure more precisely. Reliability is enhanced by having fewer moving parts. Its actuator and bearing housing are water cooled and engine oil lubricated for greater durability. A wide range of the current transmission offerings, including manual, automated manual and automatic, can be teamed with the D13F.