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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.

Production of Shelby GT350 is coming to an end

One Autoblog staffer who drove the limited-edition Shelby GT350 wrote it probably was the best Mustang he'd driven, but, at some point, the fun had to come to an end: December 31 is the last day the GT350 will be available to order.
The GT350's option list has evolved much like it did for the original 1965-67 GT350. For 2011, the 45th Anniversary edition only came in coupe form and was painted white with blue stripes, just as with the 1965 car. The 2012 GT350 was offered as a coupe or convertible, and three colors were added to the option list, just like the 1966 model. For 2013, more colors and options were added in addition to equipment and styling updates, which resulted in Wilwood instead of Baer brakes. No major changes were made for the 2014 model. From the first car in 2011, customers have been able to choose between three different configurations for their 5.0-liter V8: naturally aspirated with 440 horsepower, supercharged with 525 hp (with warranty) or supercharged with 624 hp (without warranty).
"When we unveiled this latest version of the Shelby GT350, we promised it would be built for a limited time to preserve its collectability and value," states John Luft, president of Shelby American. He may have a point, because the original GT350, which also had a limited production run, is among the most valuable muscle cars in the world.

Vaughn Gittin Jr. takes his dog for a drift

Vaughn Gittin Jr. spends a great deal of his workday going sideways, but he's usually alone in the endeavor. For a guy that is clearly a dog lover, we imagine that can get a bit lonely.
That won't be a problem for Gittin in this latest video, which features the racer hanging out with his good pal Brody (a dog) and everyone's favorite hot hatch, the Ford Fiesta ST.