For better reliability in 2017 and going forward, with transit ratings an isolated coolant loop – a water-to-water heat exchanger – will be engine-mounted to provide heat for passenger compartments as needed, while providing a self-contained coolant flow to the engine. This new approach reduces the chance for coolant leakage and air infiltration for better Exhaust Gas Recirculation (EGR) Cooler reliability and durability. Connected Diagnostics: Smarter Route Management with Connected Diagnostics