2002 Mercury Mountaineer Automatic 4-door Suv on 2040-cars

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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.

Petrolicious shows Mercedes 280SL as architecture in motion

While still an absolute beauty today, the design of the pagoda-roof W113 Mercedes-Benz SL was revolutionary when it debuted. Moving away from the soft curves of the previous SL models, the all-new generation brought an upright, angular shape that was as much architectural as automotive. In the latest video from Petrolicious, owner and architect Daniel Monti expounds on the inspiration that he gets from his 1969 280SL's fantastic styling. The roof is the most famous design feature of this generation of SL. Look at the top from the front or back, and you can see a gentle, downward arc that evokes the look of a pagoda. That one styling element is also a fabulous counterpoint to a vehicle that is largely more angular than curvaceous. Petrolicious wonderfully illustrates how some of the SL's form-follows-function design aesthetic can be found in the architect's work in this video's heaping helping of mid-century modern goodness.

New Forza 6 car pack will let you race the Pontiac Aztek

Just in time for this weekend's Rolex 24 Hours of Daytona, the new Alpinestars Car Pack for Forza Motorsport 6 on the Xbox One lets you slip into the driver's seat of last year's winner. If you want to take something much weirder for a spin, the collection also includes a 2005 Pontiac Aztek. The download is available now for $6.99. The Ford #02 Chip Ganassi Racing Riley Mk XXVI Daytona was in a four-car battle early in last year's race, but it eventually was victorious. Forza Motorsport 6 also challenges drivers who download the car to a new Rivals event around Daytona, and the fastest people could win Alpinestars prizes. If you're nostalgic for a classic Daytona racecar, this pack includes Mercury #15 Whistler Radar Cougar XR-7. The V8-powered beast won the IMSA GTO class in the 24-hour event in 1990. It should be fun around the game's longer road courses like Road Atlanta. This collection also has an eclectic mix of vehicles that aren't racecars. The controversial Aztek and the equally-controversial 1996 Subaru SVX take their places beside a lineup that offers drivers three eras of performance cars – a 1967 Sunbeam Tiger, 1974 Toyota Corolla SR5, and 1992 Alfa Romeo Milano Quadrifoglio Verde. The video below shows all of them in action. Race to the Finish Line with the Alpinestars Car Pack for Forza Motorsport 6 By Xbox Wire Staff posted on January 27, 2016 at 8:00 am With the racing season set to kick into full gear during this weekend's Rolex 24 Hours of Daytona race, Forza fans now have a chance to get their own taste of endurance racing glory with the Alpinestars Car Pack for Forza Motorsport 6, available on Thursday, Jan. 28. Leading off the pack of seven cars is last year's 24 Hours of Daytona winner, the 2015 Ford #02 Chip Ganassi Racing Riley Mk XXVI Daytona Prototype. The prototype will be fielded in this weekend's race, which begins at 2 p.m. EST on Saturday, Jan. 30 and can be viewed live on Fox Sports 1 in the U.S. The Alpinestars Car Pack features six additional cars, each with a unique pedigree all its own. From the 1990 Mercury #15 Whistler Radar Cougar XR-7 – also a competitor in Daytona 24 Hour events of years past – to the inimitable 2005 Pontiac Aztek (famous more for its fictional owner than its performance), this pack has something for every kind of car fan. Forza Motorsport 6 is the only game where players can drive last year's Rolex 24 Hours of Daytona winner on the recently remodeled Daytona International Speedway.