Though Navistar posted a loss for the second quarter this year, largely due to charges to cover losses on its “legacy” used trucks equipped with its old MaxxForce 13-liter exhaust gas recirculation (EGR) only engines, the OEM remains confident its fortunes will improve during the second half of 2017. “We are on track to deliver on our plan for the year,” noted Troy Clarke, Navistar’s chairman, president and CEO, in a conference call with analysts and reporters.