1999 Mercury Grand Marquis Gs Sedan 4-door 4.6l 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.

Junkyard Gem: 1989 Mercury Tracer Four-Door Hatchback

During the life of the Mercury brand, which began in 1939 and ended in 2011, nearly every Mercury sold in North America was a cosmetically enhanced version of some Ford model also sold here. The exceptions to this rule came when Mercury sold Fords originally designed for non-North American markets, and for which no Ford-branded version existed on our shores. The 1991-1994 Capri was such a car, as was the 1999-2002 Cougar (the Mondeo-based Cougar was unique among all Mercuries in that no other cars in the sprawling Ford Empire shared its body). The 1970-1978 Capri was sold through Mercury dealers here, but never had Mercury badging. One of the rarest of all these Mercury cars was the first-generation Tracer, a Mazda design that made its way here via Australia. The bloodline of the Tracer goes back to the Mazda 323, the ancestor of today's Mazda3 and the platform used for all those US-market Ford Escorts of the 1990s. Starting in 1991, the Tracer name went onto badge-engineered Escorts, according to Mercury tradition, but the 1988-1989 Tracers were based on the Australian-market Ford KE Laser. Underneath all of those cars (as well as the early-1990s Capris) lived Mazda 323 running gear, of course. This one nearly made it to the 175,000-mile mark during its time on the road, which is respectable by the standards of 1980s Mazdas. With an automatic transmission transferring the 84 horses from its Mazda B6 engine to the front wheels, this car wouldn't have offered a great deal of driving excitement. 1989 Tracer buyers could choose between a two-door hatchback, a four-door hatchback, and a four-door wagon. Not many Americans hurried over to their local Mercury dealers to buy Tracers, despite the fact that the nearest Ford-badged identical twins were on the other side of the globe. Mercury still seemed relevant in the late 1980s, but its days were numbered. The actress driving the Tracer in this TV commercial seems to have the same deer-in-headlights facial expression of the hapless driver-training students in the 1968 AMC Rebel commercial.

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.