Following the acrimonious end to its relationship with Navistar, Ford has launched its new 6.7-litre Power Stroke V-8 turbocharged diesel engine. Previously, Navistar manufactured the diesel engines for Ford's F-Series Super Duty trucks. However, these engines will now be manufactured in-house and Ford will adopt SCR technology and Diesel Exhaust Fluid (DEF) to meet the 2010 EPA regulations. The first vehicles to be fitted with the new engine systems will go on sale in 2011 and will feature an "inboard exhaust" which will enable easier service work for all major engine components and in turn reduce vehicle downtime, a major consideration for fleet operators.