Calling all Corvette lovers!

Did you know that Chevrolet now offers a special school to help teach you how to maximize the Corvette driving experience? The two-day program is available to 2014 Corvette Stingray owners for $1,000 – a $1,500 reduction from the standard rate.  

The best part is, you don't have to use your personal Corvette while you're learning. The school provides a fleet of vehicles and along with class instruction, participants will spend extensive time driving the Stingray on Spring Mountain’s world-class 2.2-mile road course where three levels of instruction cover novice track drivers to those with more experience.

All Fuels Are Not Created Equal

Do you still buy the cheapest gas you can find? Ever worry it might mess up your engine? Maybe you should, if you drive a newer, direct-injected car, as the hostile environment these high-precision multi-orifice injectors operate under makes them vulnerable to the performance-robbing deposits cheap gas can leave. 

According to consulting engineer Jerry Horn at Chevron, these deposits are formed from a series of compounds, among them olefins and di-olefins with double-bonds that break down, forming gummy deposits that can alter airflow around intake valves or fuel flow out of injectors. Jim Macias, fuels technology manager at Shell, adds that these carbonaceous deposits start out as one of the 300 compounds in gasoline, then polymerize on hot surfaces. There's no single component to target, which complicates preventing or cleaning them. 

Back in the 1990s, as Tier I emissions regs were phased in, the deposits -- created by fuel impurities -- began causing problems for the emissions gear that manufacturers had to guarantee for 100,000 miles. So the EPA established a minimum fuel-additive performance standard in 1995, but the standard was below what some suppliers were then offering, so many reduced their fuel detergency, making matters worse for the subsequent Tier II standards of 2004. After unsuccessfully lobbying for higher standards, a group of automakers (Audi, BMW, GM, Honda, Mercedes, Toyota, and Volkswagen ) consulted with fuel suppliers to establish a higher voluntary standard, marketed as "Top Tier Detergent Gasoline." 

Top Tier is a performance standard, establishing tests and minimum acceptable results for intake-valve and combustion-chamber deposits, fuel-injector fouling, and intake-valve sticking. It also requires that all fuel grades marketed by the brand meet the standard (not just the premium grade, for example). Additive manufacturers pay for the testing, fuel suppliers pay an annual fee to participate, and compliance testing is conducted by third-party labs. Over and above the three basic tests to certify Top Tier fuels, the major fuel suppliers conduct additional testing. Jerry Horn explains that Chevron is "trying to cover more of the on-road vehicle population with additional engine and vehicle dynamometer tests, and then also we do tests with a cab company in SoCal to test fuels under relatively severe service conditions." A revision to the current EPA and CARB test regimens is also expected in the future, perhaps to include testing of direct-injection, but certainly to change the standardized test engines.

So how do Top Tier fuels like Chevron and Texaco with Techron, Shell's Nitrogen-Enriched, and BP's Invigorate work? Each employs top-secret organic chemistry (Chevron admits theirs involves a polyether amine. Others often employ polybutene amines, if that helps), but by and large the molecules include a "hydrocarbon tail" (that keeps the detergent soluble in fuel) attached to a head that includes a functional group containing nitrogen. When enough of these nitrogens attach to a deposit, it comes off. Then the nitrogens can attach to the clean surface and prevent new deposits from forming. The fresh challenge with DI is designing functional heads that don't lose their cool at temperatures of 4000 degrees F or higher. Chevron and Shell both claim that running a few tanks of fuel can remove the deposits left by miles of use of minimum-standard fuels. 

National gas prices are still well below historic highs, but as for fuel-system cleaning products, Macias cautions "the aftermarket treatments tend to be high-concentrations of these additives. Some of that material can get into the crankcase and the effects are not entirely known. It is a big dose of materials, and we are not sure if it could cause damage to the catalytic converter. The only way to ensure that a vehicle maintains peak performance is to use top-quality fuel consistently." Horn states this about these concentrated aftermarket additives "You can wash [deposits] off, but they'll come back, and any deposits can impact air-fuel mixture and combustion, emissions, drivability, fuel economy, etc."  

If you love your car like you love your pet, feed it the good stuff, at least every other tank or so.

Source: http://blogs.motortrend.com/1403_all_fuels_are_not_created_equal_technologue.html

Awesome Adventures for your Bucket List

Looking to add some excitement to your life? Tired of the same old family vacations to the same old places? For those swashbuckling, thrill-seeking daredevils out there, we've compiled a list of destinations that are sure to get your blood pumping, your heart racing, and possibly your bladder weakening.

So grab a pen and start adding these awesome entries onto your bucket list. As Bilbo Baggins would say, "I'm going on an adventure!"

1. Hang Gliding in Rio de Janeiro, Brazil - With a warm tropical breeze in your face and a panoramic view of the breathtaking mountains and beaches of Rio de Janeiro, you will have the unique sensation of flying like a blue macaw at speeds up to 65 mph.

2. Sky Diving over Mount Everest in Nepal - Only offered four times a year, this wild adventure allows you to sky dive over the highest peak in the world. How many people can say they've done that?!

3. Base Jumping off Kjerag Mountain in Lysefjord, Norway - At 3,500 feet above the fjord, Kjerag towers above the other peaks along the Lysefjord, making it an adrenaline junky’s dream.

4. Bungee Jumping at the AJ Hackett Macau Tower in China - The AJ Hackett Macau Tower Bungee Jump is 764 ft hight, making this location the Guinness World Record holder for the Highest Commercial Bungee Jump in the world.

5. Heliskiing in British Columbia, Canada - Heliskiing offers a new definition to downhill skiing, allowing adrenaline junkies access to higher parts of mountains that are only reachable by helicopter.

Tires 101 - Learning the Tire Categories

Tires are purpose-built. In other words, they are built using the specifications that are best suited to the job that the tire will perform. These specifications determine the materials that the tire is made of as well as the tread patterns and the overall look of the tire. These build specifications can be broken down into the following categories: Touring, Performance, All-Season, Light Truck, and Winter.

Touring

I'm sure you heard the term "touring", but what does that mean? Touring means traveling at highway speeds for prolonged periods. Touring tires are designed to give a quiet, excellent ride with top-notch handling at highway speeds. This type of tire has a non-aggressive tread pattern with straight ribs that allow the channeling of water. Another characteristic of the touring tire is long tread life. Long tread life is certainly a plus but the downside is that the hard compound that makes up this tire tends to freeze in winter, which in turn, sacrifices traction in bad weather.'
 

Performance

This type of tire does a great job at highway speeds. It has an aggressive tread pattern that provides great traction and handling during cornering and aggressive driving. These tires have heavy or large shoulder lugs for cornering traction and a wide smooth face for gripping the road surface. Evacuating water is usually not a strong point of this type of tire. They are made of a softer rubber compound which aids traction but wears out quickly. Performance tires are usually short-lived. Most "Summer" tires fall under this category.'
 

All-Season

This category includes the most versatile tires. All-season tires have a dual purpose. First, the tread patterns squeegee, or remove water from underneath each tread block maximizing rubber-to-road contact. Secondly, the tread patterns allow the "pumping" of water, ice, and snow away from the tire. These tires are also made up of a compound that resists freezing, ensuring better traction during icy conditions. Another great characteristic of the all-season tire is its performance in great weather. They are comparatively quieter than performance tires and their blocky tread pattern allows good traction and handling in the wet and dry.'
 

Light Truck

This type of tire is built for work. They are constructed to work under heavy loads and in rough conditions. The rubber compound is hard, ensuring durability and the steel plies help the tire resist punctures and tears. The tread patterns vary widely and is determined by whether the tire will be used on or off-road. You will find lots of variation for light-truck tires, so thinking through the truck or SUV's mission will go a long way.'
 

Winter

This category of tire is built for inclement and severe weather. Its whole mission in life is to move and break through snow and ice. The rubber compound resists freezing temperatures and remains flexible. The treads open and close as the tire moves down the road creating a "crunching" effect on ice and snow. This "crunching" keeps the treads clean which gets them ready for the next bite, ensuring traction. They are excellent at evacuating water. The sharp edges on the treads break through ice so that the tire can find the road or a surface that provides greater traction. If you experience an abundance of ice, snow, or inclement weather, the winter tire is your best bet.

Here's a quick guide for category characteristics:

• Touring- quiet, good highway performance, long tread life 
• Performance- great handling and grip for aggressive driving in the dry, poor performance in wet and snow, short tread life 
• All-Season- good highway performance, good wet, dry, and snow performance, moderately quiet 
• Light Truck- good for heavier loads, hard compound, aggressive tread pattern, good on and off-road performance 
• Winter- great in ice and snow, resists freezing, best at evacuating ice and snow, great winter traction

Now that you can "speak" tires and know the difference between the types of tires available, you can make an informed purchase, choosing the right tires for your needs.