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Junkyard Gem: 1993 Mercury Topaz GS Sedan

As long as the Mercury brand existed — a period spanning the 1939 through 2011 model years — nearly every Mercury sold in the United States was more or less a redecorated Ford model. The Torino had its Montego sibling, the Crown Victoria had the Grand Marquis, the Cougar was based on everything from the Mustang to the Mondeo, and so on. Naturally, when the folks in Dearborn developed the Ford Tempo compact, a Mercury version had to be created. This was the Topaz, with the official launch of both cars taking place on the deck of the aircraft carrier often referred to as the USS Decrepit. You can't make this stuff up! The Tempo/Topaz, also known as the Tempaz, has largely faded from our collective automotive memory by now, since it broke no significant new engineering or styling ground (this story would be much different if Ford had only put the amazing straight-eight "T-Drive" Tempaz powertrain into production) and didn't have any endearing features other than being a cheap domestic competitor to the Toyota Corolla and Nissan Sentra. Still, close to 3 million Tempazes left North American Ford and Lincoln-Mercury showrooms during the 1984-1994 period. As you'd expect, most of these disposable cars disappeared from both the street and the car graveyard long ago. It takes a very special Tempaz for me to break out my camera while I'm patrolling my local wrecking yards; generally, this means an ultra-rare all-wheel-drive version or at least a very early model in super-clean condition. Today's Junkyard Gem is neither, but I took one look at this spectacular Bordello Red crypto-velour-and-slippery-plastic interior and recognized that this was no ordinary junkyard Mercury. It appears that Mercury had dropped the idea of clever names for base-grade seat fabrics by the time of the Topaz, referring to this stuff as just "cloth" in all the brochures I could find. That's too bad, because Mercurys had cool names for upholstery (e.g., Chromatex) in the old days. The interior is in very good condition but the steering wheel shows substantial wear, so I think this is a high-mile Topaz that got meticulous care from its owner or owners. Ford used five-digit odometers on these cars until the end of production, however, so we'll never know if this reading indicates 65,404 miles or 365,404 miles. The body is very straight, but there's some nasty corrosion behind the right front wheelwell.

Mustang, Camaro, Challenger gallop onto USPS pony car postage stamp set

Some of America's most iconic cars are about to be immortalized on postage stamps. A new set by the U.S. Postal Service will celebrate the the golden era of pony cars, featuring five classic examples of Detroit iron. Each one is beautifully illustrated in oil-on-canvas style, with subjects in motion and sunlight glinting off the chrome, and would add a nice touch to any first-class letter. The pony car segment was all about (relatively) small, sporty alternatives to the full-size land yachts of the 1960s. They typically came equipped with 6-cylinder engines or small-block V8s. The category was named after the Ford Mustang, hence  the name. Some, though, argue that the Plymouth Barracuda, which was launched a couple of weeks before the Mustang, is the first. Luckily, the Falcon-based Mustang's distinct styling generated a sales sensation, or we might be calling them fish cars. Appropriately, one of the featured cars is a Mustang. But it's not just any Mustang. The 1969 Boss 302, seen here resplendent in Bright Yellow, was created for the hotly-contested SCCA Trans-Am racing series. One of its main rivals would have been the 1969 Chevy Camaro Z/28, also created specifically for the series, and is included in the set in Fathom Green. Representing Auburn Hills in the set is a 1970 Dodge Challenger R/T in Plum Crazy, while Southfield's American Motors gets a nod with an AMC Javelin in Big Bad Orange. The Mustang's platform cousin, a 1967 Mercury Cougar XR-7, is portrayed in a gorgeous Burgundy Poly that almost looks incomplete without Neko Case on the hood. It's not the first time the USPS has honored America's rich car culture on its stamps. In 2013, it issues a series of muscle car stamps with the help of Richard Petty. That set featured a 1966 Pontiac GTO, 1967 Shelby GT-500, 1970 Chevelle SS, 1970 Plymouth Hemi ’Cuda and, of course, a 1969 Dodge Charger Daytona. Another set in 2016 featured classic pickup trucks. Going further back, a 2008 release had chroed and finned automobiles of the 1950s and a 2005 release featured sporty American cars of the same era. The pony car stamps will debut on August 25 at the Great American Stamp Show in Sacramento, California in partnership with the American Philatelic Society. The public is free to attend the dedication ceremony, but you must RSVP first. After that, they will be available at local post offices and on line at the USPS store.

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.