2003 Ford Excursion Xlt Sport Utility 4-door 6.8l on 2040-cars

Auto blog

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

Cadillac Escalade gets $5,000 discount to ward off Lincoln Navigator

General Motors apparently isn't going to let early good reception for the redesigned Lincoln Navigator steal thunder from its own luxury SUV without a fight. It's offering a $5,000 discount on the purchase or lease of the Cadillac Escalade this month to any buyer who trades in a 1999 or newer Lincoln model, Bloomberg reports. GM spokesman Jim Cain told Bloomberg the incentive is being offered to keep prices competitive for the Escalade. The 2018 Navigator starts at $72,055, compared to $73,995 for the Escalade, but the outgoing version of the Navigator is selling for an average of around $53,000, compared with more than $80,000 on average for the Escalade, he said. The Escalade was the top-selling domestic luxury SUV in October and No. 4 in the segment, according to Motor Intelligence. It far outsold the Navigator, which last saw a refresh in 2015 and a full redesign in 2007. But Ford is hoping to gain back some ground with the new Navigator and updated Expedition, which also trails the Chevrolet Tahoe and Chevy Suburban in its segment. Bloomberg notes that one Morgan Stanley analyst estimates that GM owns a $2 billion annual pretax profit edge in the lucrative luxury sport utility segment. Our recent First Drive review called the new Navigator "far superior to its primary competitor, the Cadillac Escalade."Related Video:

Galpin Auto Sports and Fisker turn the Mustang into a Rocket in LA [w/video]

Galpin Auto Sport and Henrik Fisker made big promises about the Rocket before its debut at the Los Angeles Auto Show today, calling it the "ultimate American muscle car." Now that this 725-horsepower carbon-fiber Ford Mustang has officially been revealed, we've now got a chance to see if their vision backs up all the bluster. The Rocket is based off the latest 2015 Mustang, but the entire exterior design has been substantially reworked by Fisker. "This is a project born out of passion, it's a dream come true, to have the opportunity to 'touch' a Mustang and apply my design ideas to it," he says in the model's announcement. The biggest changes come up front, where Fisker has added a gaping hexagonal grille with a polished bar running and two nearly hidden driving lights at the top corners. Long nostrils run down each side of the hood, taking their inspiration from the 1968 Shelby GT500. The Rocket's design also emphasizes its scalloped sides, which run back to functional ducts at the rear to cool the Brembo Grand Turismo brakes. When checking out the Rocket from the rear, it's easy to spot the wider fenders that are beautifully blended into the integrated spoiler. The interior has been left mostly alone beyond some eye-grabbing red leather and carbon-fiber trim. Under the hood, Galpin spokesperson Nathan Hoyt has confirmed to Autoblog that the Rocket employs a 5.0-liter V8 with a Whipple supercharger which can be called to attention with a six-speed manual gearbox. It took only a few months for the vehicle to go from conception to reality. Fisker showed Galpin President Beau Boeckmann early sketches at this year's Pebble Beach Concours d'Elegance, and the two parties went from there. "When Henrik showed me his ideas, I got chills - it's literally the most beautiful Mustang I have ever seen," says Boeckmann in the company's release. Production is set to begin in December, with deliveries starting in early 2015. There's no set production total in mind for now, but Hoyt tells Autoblog that the price will be "just over $100,000." Scroll down to read all of the details about Fisker and Galpin's Rocket.