There may be something to your theory. The Expedition and Lincoln Town Car, were on a top 10 list of long lasting vehicles. The V8 Town Car was discontinued for the V6 MKS(?). The Expedition is now a Aluminum body V6, with no V8 option.I'm talking 2007-2017 interior it shares the Super Duty front dashboard and headliner and seats it's all the same other than a Super Duty stamp in the glovebox and a non column shifter. You're barking up the wrong tree about the 6 cyl engine... I'm not a fan either Ford should be investing in making their V8s fuel efficient because they can't be beat on longevity. There are a lot of guys with half a million miles on their 6.2 V8s and Modular V8s you can't beat that with a small turbocharged engine it's beyond its realm of limitations, at least on this planet. The best thing for the environment is what car makers hate: vehicles that last a long time that don't have to be replaced by expending energy to create new ones. One 20 year old expy with a V8 that lasts has less environmental impact than the three small turbo engines it takes to equal the life of one large displacement engine. Yep the tree huggers keep buying those brand new priuses every year that harm the environment more than a 8100 Vortec chevy truck.