the air in your tires is probably quite old and like anything else as it gets old turns a little thick and heavy ..

i have found that when i exchanged the old air in my tires with new fresh air it cut down the friction between the tire rubber and the road surface which increased my gas milage by 4 miles to the gallon .......

from a newsletter that I subscribe to.....

Shocked at the pump

I filled up at the gas station recently, and I was shocked. The cost to fill up was $64.12! I haven't been hiding under a rock. It's just that I don't often fill the one vehicle I share with my husband, so it wasn't until I handed over $64.12 that the runaway cost of gasoline got personal. As I pulled away, I renewed my resolve to employ every gasoline-conservation technique and tip known to humankind. I thought perhaps you could use a reminder as well.

COMBINE ERRANDS: Instead of running to the dry cleaners tonight, the drugstore tomorrow, the post office the next day and the doctor on Tuesday, combine those errands into one trip. Plan ahead because it's all those short trips

that can whack your gas mileage.

GET TECHNICAL: Learn to drive as if there's an egg in between the gas pedal and the floor. Break it and you die. This means gentle and gradual pressure on the gas, no sudden acceleration or "floor boarding." CARPOOL AND OTHER ALTERNATIVES: Whenever possible, walk or ride a bike. Most of your trips are within just a few miles of your home, anyway, so cut them down and get some exercise at the same time. Can't avoid a car trip? Whenever possible, share a ride with a co-worker or another family member.

PASS ON THE PREMIUM: High-octane fuels aren't necessarily better for your car. In fact, unless your car's manual specifically calls for premium fuel, it could be detrimental to your car's engine. The American Automobile Association (AAA) estimates that premium gas accounts for about 20 percent of total gasoline sales in this country, despite the fact that fewer than 10 percent of cars on the road are designed to burn the higher-octane fuel. That means U.S. drivers spend about $1.7 billion per year more for gasoline than they should.

SLOW DOWN: Gas mileage decreases rapidly above 60 mph. If you drive 70 mph instead of 55 mph, experts say you could be burning up 17 percent of your fuel to get there just a few minutes sooner. In fact, each 5 mph you drive over 60 mph is equal to paying an additional 10 cents per gallon of gas.

KEEP THEM FILLED: Bald tires are not only a driving hazard, but they burn more fuel. Keeping your tires inflated properly is an easy way to improve your gas mileage by up to 3 percent, which is a savings of at least 5 cents per gallon.

TRUNK LIGHT: For every 100 pounds of excess weight in your trunk, your car loses 1 percent of fuel economy. Empty everything but the required safety equipment.

While the price of gasoline remains out of our control, we control how often we visit the filling station. How low can you go? Could you cut one complete fill-up during the coming month? That's my goal; I'll keep you posted.

Rowdy, replace the regular air in your tires with helium, makes the car much lighter which results in higher gas mileage.

Some people can eat less beans.

Others can just not drive.

Some shouldn't be driving in the first place.

stay home.