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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 cuts F-150 fuel use through CNG-capable fleet sales, EcoBoost

The possibility of $1-a-gallon fuel would make a lot of US governmental entities sit up and take notice. The state of Oklahoma and the city of Dallas are making that happen. Those two entities are buying up a bunch of Ford F-150 pickups retrofitted to run on compressed natural gas (CNG), all in the name of cost savings and emissions reduction. Oklahoma is buying 256 of the F-150s, while Dallas is buying another 65. The trucks, which cost between $6,000 and $9,500 to retrofit (on top of the original price), can run on either CNG or liquefied petroleum gas (LPG). And while that's a substantial hit, conversion costs are typically paid back in three years thanks to lower refueling costs. CNG prices are as low as $1.07 a gallon in parts of Oklahoma. How much lower? The national average price for CNG is about a buck and a half less than the $3.67 average per-gallon cost of gasoline. And CNG prices are as low as $1.07 a gallon in parts of Oklahoma, where CNG is plentiful. CNG also cuts tailpipe greenhouse gas emissions by about 20 percent compared with gasoline, while the retrofitted trucks can go as far as 450 miles from their CNG tanks in addition to the 300-mile range from their conventional tanks. That's useful in a bit state like Texas. This week, the US Energy Department trumpeted a $5.9-billion loan program that Ford accessed to upgrade its factories for production of its EcoBoost engines, noting that Ford has sold a half-million F-150 trucks with EcoBoost engines. Those trucks have collectively cut fuel use by almost 57 million gallons of gas during the past three-plus years. Check out Ford's press release on the F-150 purchases below and the Energy Department's statement about its loan program here. OKLAHOMA, DALLAS ORDER 300-PLUS CNG-CAPABLE FORD F-150 PICKUPS AS DEMAND GROWS FOR ALTERNATIVE FUEL OPTION The state of Oklahoma and its agencies to buy 256 Ford F-150 trucks prepped to run on compressed natural gas; Dallas orders 65 for its fleet 2014 F-150 available with gaseous-fuel prep option on 3.7-liter V6 engine; can run on CNG or liquefied petroleum gas (also called propane autogas) By summer, Ford will offer eight vehicles that can run on clean-burning, affordable CNG; the company is on track to sell more than 15,000 such vehicles in 2014 The state of Oklahoma, its agencies and the city of Dallas have ordered a total of 321 Ford F-150 pickups that can run on compressed natural gas.

Seinfeld's Porsches, '61 Ferrari lead the way at Gooding Amelia Island sale

If you're in the market for a sports car with celebrity provenance or just an incredibly well-preserved high-performance machine, then you'll want to check out Gooding & Company's Amelia Island auction in Florida on March 11. The highlight of the sale is likely 18 cars, mostly Porsches, from Jerry Seinfeld's collection, but there's more to see than just the comedian's sporting metal. While several of Seinfeld's cars carry auction estimates in the millions, they aren't the most valuable at the sale. That honor falls on a 1961 Ferrari 250 GT SWB California Spider, which could sell for between $15 million and $17 million. This one is among the 37 examples with covered headlights, and it has some theatrical provenance after appearing in the Sophia Loren film Yesterday, Today, Tomorrow. If your tastes skew more American, then one of 31 Ford GT40 MKI road cars is also among the lots. Gooding expects the rare coupe to sell for between $3.2 million and $3.6 million. Ford originally used this GT40 for dealer promotions, but it eventually fell into private hands. Even today, its multiple owners have only covered around 3,200 miles in it. Gooding also expects a 1931 Duesenberg Model J Disappearing-Top Convertible Coupe with a body by Murphy to bring $2.5 million to $3 million. The auction house claims this might be the "most original" example left because of a history of owners who kept it for long periods – and the vehicle never needed a complete restoration. Some lots carry more attainable estimates like $35,000 for a 1962 MGA. You can check out all the listings on Gooding's online catalog and some of the highlights in the gallery above. You've probably read the news about Seinfeld's Porsches, but here's a refresher: The collection includes amazing cars like a 550 Spyder, 917/30 Can-Am Spyder, and a 718 RSK. Related Video: