2004 Ford Excursion Xlt Sport Utility 4-door 6.8l on 2040-cars

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The tricky business of octane, power, and MPG

Given tepid green-car sales numbers this year, consumers in the US aren't making the transition away from internal combustion engines too quickly. Regulations are still mandating cleaner emissions, though. In addition to downsizing and turbocharging, there's growing consideration about moving to higher-octane fuel to improve overall efficiency. In a new report, engineers at FCA, Ford and General Motors Powertrain are showing that it could work, too. The major advantage to higher-octane fuel is that it supports higher compression ratios. That in turn can lead to more power from burning the same amount of gas. "Higher ethanol content is one available option for increasing the octane ratings of gasoline and would provide additional engine efficiency benefits for part and full load operation," the researchers write in the study's abstract. The authors even think it could be possible to update some modern vehicles' engine calibration to be optimized for the better gas. While the benefits are there, we still have a long way to go before higher-octane fuel becomes a national standard. According to Green Car Congress, 87 percent of the gas sold in the US is regular grade 87-octane. Meanwhile, premium 91-93 octane makes up just 10 percent. The various grades of fuel illuminate even more annoyances with the current system. For example, Ford generally recommends 93-octane for EcoBoost engines, and the power outputs that the company publishes are based on using it. However according to Green Car Reports, such premium gas is very difficult to find in some regions of the US, especially along the West Coast. The powertrains still run on lesser grades but with lower power output. The researchers' discussion of possibly increasing ethanol in gas also comes during a heated debate on the substance. The current administration is pushing for less of the corn-based fuel in the coming years. Although, several presidential hopefuls might be favor of reversing that course.

Ford Focus RS configurator hits the Internet

Ford made waves yesterday when it drooped the performance and pricing details on the new Focus RS. Perhaps keen to keep the momentum going, the Blue Oval has launched the configurator for its new fire-breathing hot hatchback. As configurators go, this is a lot like the Ford's other build-your-own tools, only it's even more limited. The total list of options on the new Focus RS is quite light. You can pick from one of four colors, including the stylish Nitro Blue shown above, while there are just two interior upholstery schemes – partial black leather and full black leather for the standard Recaro seats. Your decision there will ultimately inform just how pricey your Focus RS will get. Opt for the full leather interior and you'll be stuck with the so-called RS2 package, which adds heated, powered front seats, a heated steering wheel, heated mirrors, and navigation to the standard SYNC3 infotainment system. Oh, and it'll also drive the price up by $2,785. Other options include a handsome set of 19-inch wheels, with the option of ultra sticky Michelin Pilot Sport Cup 2 tires. The wheels alone are a $1,395 option while adding the tires runs the price up $595, which is a bargain considering how pricey 19-inch PS Cup 2s are. The final option is a simple sunroof, priced at just $895. As you can see above, we've built our ideal Focus RS, finished in Nitro Blue with the 19-inch wheels, RS2 package (we live in Michigan, after all) and standard Michelin rubber. Yep, we passed on the more aggressive tire, with blame going to replacement costs. The total price comes to $41,480. Head on over to Ford's website and build your very own Focus RS, and then head back here and let us know how you optioned it, down in Comments. Related Video:

Junkyard Gem: 1993 Mercury Topaz GS Sedan

As long as the Mercury brand existed — a period spanning the 1939 through 2011 model years — nearly every Mercury sold in the United States was more or less a redecorated Ford model. The Torino had its Montego sibling, the Crown Victoria had the Grand Marquis, the Cougar was based on everything from the Mustang to the Mondeo, and so on. Naturally, when the folks in Dearborn developed the Ford Tempo compact, a Mercury version had to be created. This was the Topaz, with the official launch of both cars taking place on the deck of the aircraft carrier often referred to as the USS Decrepit. You can't make this stuff up! The Tempo/Topaz, also known as the Tempaz, has largely faded from our collective automotive memory by now, since it broke no significant new engineering or styling ground (this story would be much different if Ford had only put the amazing straight-eight "T-Drive" Tempaz powertrain into production) and didn't have any endearing features other than being a cheap domestic competitor to the Toyota Corolla and Nissan Sentra. Still, close to 3 million Tempazes left North American Ford and Lincoln-Mercury showrooms during the 1984-1994 period. As you'd expect, most of these disposable cars disappeared from both the street and the car graveyard long ago. It takes a very special Tempaz for me to break out my camera while I'm patrolling my local wrecking yards; generally, this means an ultra-rare all-wheel-drive version or at least a very early model in super-clean condition. Today's Junkyard Gem is neither, but I took one look at this spectacular Bordello Red crypto-velour-and-slippery-plastic interior and recognized that this was no ordinary junkyard Mercury. It appears that Mercury had dropped the idea of clever names for base-grade seat fabrics by the time of the Topaz, referring to this stuff as just "cloth" in all the brochures I could find. That's too bad, because Mercurys had cool names for upholstery (e.g., Chromatex) in the old days. The interior is in very good condition but the steering wheel shows substantial wear, so I think this is a high-mile Topaz that got meticulous care from its owner or owners. Ford used five-digit odometers on these cars until the end of production, however, so we'll never know if this reading indicates 65,404 miles or 365,404 miles. The body is very straight, but there's some nasty corrosion behind the right front wheelwell.