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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.

Should heavy-duty pickup trucks have window stickers with fuel mileage estimates?

If you were to stroll into your nearest Chevrolet, Ford, GMC, Nissan, or Ram dealership, you'd find a bunch of pickup trucks. Most of those would have proper window stickers labeled with things like base prices, options prices, location of manufacture, and, crucially, fuel economy estimates. But you'd also run across a number of heavy-duty trucks with no such fuel mileage data from the Environmental Protection Agency. The EPA doesn't require automakers to publish the valuable miles-per-gallon measurement for vehicles with gross weight ratings that exceed 8,500 pounds. That makes it difficult for consumers to compare behemoths powered by turbocharged diesel engines – between one another, and between smaller, gasoline-fueled trucks. Consumer Reports doesn't think it should be this way, and it's spearheading an effort (PDF link) to get the government to require manufacturers to publish fuel economy estimates. In its own testing, CR found that heavy-duty pickups powered by Ford's Power Stroke, GM's Duramax, and FCA's Cummins diesel engines (which doesn't include the Ram's EcoDiesel) get worse fuel mileage than their lighter-duty gas-powered siblings. We're not so sure HD-truck buyers are unaware of this fact – big diesels don't really come into their own until big loads are placed in their beds or attached to their trailer hitches. Under heavy workloads, the diesel trucks will almost certainly return greater efficiency than a similar gas-powered truck. What's more, HD trucks with lumbering diesels in general make the driver feel more confident while towing due to greater torque at low engine RPM than gas trucks. They also offer greater max-weight limits. Still, we agree EPA fuel mileage estimates should be offered for heavy-duty pickups. And we think the comparisons provided by Consumer Reports might be interesting to potential buyers. Click here to see the results of CR's tests, and let us know what you think using the poll below. Related Video: Featured Gallery 2017 Ford F-Series Super Duty: First Drive View 22 Photos News Source: Consumer Reports Government/Legal Green Read This Chevrolet Ford GMC Nissan RAM Fuel Efficiency Truck Commercial Vehicles Diesel Vehicles poll gmc sierra hd chevy silverado hd

2017 Ford GT looks resplendent in Liquid Silver and will be built in Ontario

You didn't think we'd let an opportunity to capture another high-res image gallery of our favorite vehicle from the North American International Auto Show pass by, now that it's taking center stage in Chicago, did you? Especially since it's now painted in a brand-new hue? Of course not. And so we're happy to present to you the 2017 Ford GT in Liquid Silver, wearing titanium-tinted racing stripes. It may not be as classically American as the show-stopping blue that debuted with the concept in Detroit, but it's beautiful nonetheless. And, in even better news, we hear that the GT has been confirmed for production at Ford's factory in Markham, Ontario, according to our Canadian friends at CTV News. To recap what we know about the Ford GT – besides the fact that we're in mad, mad love with it, of course – it's beautiful, will be powered by a mid-mounted 3.5-liter twin-turbo V6 with "more than 600 horsepower," it's beautiful, it sends all that power to the rear wheels through a seven-speed dual-clutch gearbox, it's beautiful, blends a carbon fiber monocoque and body panels with aluminum subframes, and it's beautiful. We think it's likely headed for endurance-racing competition, as was the original GT40 that is its spiritual grandfather, and we're sure it will look good doing it. Heck, maybe it'll even win at Le Mans. In any case, check it out in high-res glory below, in multiple color schemes, in both images and video. Related Video: Related Gallery Ford GT Concept: Detroit 2015 View 45 Photos Related Gallery Ford GT View 11 Photos Related Gallery 2017 Ford GT: Chicago 2015 View 30 Photos Image Credit: Live photos copyright 2015 Drew Phillips / AOL Design/Style Plants/Manufacturing Chicago Auto Show Ford Coupe Performance Supercars Videos autoblog black