We have already shown you how to save money when you're filling your gas tank at the pump, but that isn't the only way to keep a few bucks in your pocket. You can save money in-between fill-ups by using smart driving techniques. Master the art of conserving gas, that is, using less in the first place, and you'll be filling up less and saving more. Here are our 10 top tips to keep your gas tank full this summer.

Drive a manual/stick shift if you can

Driving a car with manual transmission is a learned skill to be sure, but it's one worth acquiring if you wish to save money. Driving a manual puts you more in control of RPMs and keeps you more aware of your driving habits. the only trouble? Manual transmissions are more common on sporty models and heavier duty trucks, both of which are not known for their thrifty gas mileage. But if those appeal to you, or you have a manual already, you're ahead of the game. Driving a manual can save you an average of 2 to 5 miles per gallon.

Drive at or below the speed limit

Keep an eye on your speedometer and let up on the lead foot!

We know, we know, this is boring advice. But speeding causes you to burn up gas at a much quicker rate, meaning you're blowing money out the exhaust as you haul down the highway. Most cars are designed to operate best and most efficiently when traveling about 50-60 miles per hour, so keep an eye on your speedometer and let up on the lead foot.

Of course, driving at or below the speed limit also improves safety and cuts down on speeding tickets, which saves you money in the long run.

Use cruise control when possible

Similar to the above tip, use cruise control whenever possible to cut down on unnecessary speed changes which burn fuel fast. Driving aggressively, weaving in and out of traffic and speeding then slowing down, can lower your gas mileage by 15 to 30 percent. Cruise control regulates your speed and lets you take your foot off the pedals...curtailing your ability to stop and start. Find a comfortable space in the right lane, flip on cruise control, and enjoy the ride, knowing your gas tank is still nice and full.

Stop early and long

Stopping and accelerating hard are two easy ways you're probably wasting gas every time you drive, especially around town. Stop early and long. This requires actively engaging in driving, rather than drifting off into your own thoughts. You'll need to anticipate stops so you can hit the brake pedal early. Go easy on it, allowing a nice long stop. This often results in not having to fully stop at all, because you'll take it so slow and easy, the light will change and you'll be going with the flow of traffic as it turns green.

"Lift and Cover" often

The term "lift and cover" means to take your foot off the accelerator and transfer it to hover over the brake. This allows you to be prepared to stop while not needing to push down on the accelerator, thereby saving gas. Do this when driving around town in slower traffic, or when you're going around hills or curves. You can also coast. Take advantage of the downhill motion to take your foot off the accelerator. No need to spend gas when gravity is doing all the work. This might not have a huge effect on gas mileage, but every little bit counts.

Don't idle

Idling, or keeping your car running when you are not actually driving, such as when in line at the bank, or selecting a movie at Redbox. Idling is not allowed in many towns and areas (such as by schools), and for good reason. You may feel more comfortable in a running car, but you're just letting fuel go straight into the atmosphere while you go nowhere. Not only is this detrimental to the environment, it's detrimental to your sense of frugality. Restarting your car only uses about 10 seconds' worth of fuel, so if you're going to be idling for more than 10 seconds, it's better to turn off your car and restart later.

Keep your car light

Don't add extra weight, which, of course, weighs down your car. Don't haul around the dog kennel if you only bring the dog to the groomer's once a month. Don't bring all of your beach gear when you only get there occasionally. Keeping your car light uses less gas. Bikes, kayaks, rooftop carriers and cargo bins also add resistance and lower gas mileage, so take them off when you're not using them.

Keep your tires well maintained

Reduce drag by making sure your tires are in tip-top shape. Of course, purchasing new tires is a big investment that doesn't offset the price of gas, but riding on worn-out tires is not only less cost-effective for gasoline, but it's also unsafe. Put a penny Lincoln's-head-down between the treads on your tires. Can you Lincoln's hairline? If so, it's time for new tires. And swap out your heavy winter tires as soon as you can for lighter snow tires, or keep the all-seasons on until your car can't handle the weather.

Use a GPS to check for different route options

Pull out your handy cell phone and check the GPS for alternate routes when you're going out of your normal routine. There are also apps that can show you alternate routes. If there's construction, instead of idling in traffic for hours on end, seek an alternate route. Most people will look for the shortest distance, but that can actually often mean more gas. Look for the one with the fastest travel time, which is likely to mean you won't have to start and stop as much.

Be creative with your transportation

Of course, driving is often the most convenient way to get to work, school, or anywhere in between. But it's often just a default for us and not necessarily the smartest option. Things like saving up errands on one side of town to do together can help gas mileage tremendously. Driving all over town aimlessly, at the mercy of our whims, wastes precious gas. Carpooling is another great option, and public transportation or biking/walking may make sense for your lifestyle.