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Old 09-08-05, 02:04   #1 (permalink)
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Gas saving tips

With all the talk about gas prices going up and up and up....I was thinking that maybe we should share some gas-saving tips....I'll start off with a list from this site: http://www.howtoadvice.com/savinggas

1. Avoid prolonged warming up of engine, even on cold mornings - 30 to 45 seconds is plenty of time.

2. Be sure the automatic choke is disengaged after engine warm up... chokes often get stuck, resulting in bad gas/air mixture.

3. Don't start and stop engine needlessly. Idling your engine for one minute consumes the gas amount equivalent to when you start the engine.

4. Avoid "reving" the engine, especially just before you switch the engine off; this wastes fuel needlessly and washes oil down from the inside cylinder walls, owing to loss of oil pressure.

5. Eliminate jack-rabbit starts. Accelerate slowly when starting from dead stop. Don't push pedal down more than 1/4 of the total foot travel. This allows carburetor to function at peak efficiency.

6. Buy gasoline during coolest time of day - early morning or late evening is best. During these times gasoline is densest. Keep in mind - gas pumps measure volumes of gasoline, not densities of fuel concentration. You are charged according to "volume of measurement".

7. Choose type and brand of gasoline carefully. Certain brands provide you with greater economy because of better quality. Use the brands which "seem" most beneficial.

8. Avoid filling gas tank to top. Overfilling results in sloshing over and out of tank. Never fill gas tank past the first "click" of fuel nozzle, if nozzle is automatic.

9. Exceeding 40 mph forces your auto to overcome tremendous wind resistance.

10. Never exceed legal speed limit. Primarily they are set for your traveling safety, however better gas efficiency also occurs. Traveling at 55 mph give you up to 21% better mileage when compared to former legal speed limits of 65 mph and 70 mph.

11. Traveling at fast rates in low gears can consume up to 45% more fuel than is needed.

12. Manual shift driven cars allow you to change to highest gear as soon as possible, thereby letting you save gas if you "nurse it along". However, if you cause the engine to "bog down", premature wearing of engine parts occurs.

13. Keep windows closed when traveling at highway speeds. Open windows cause air drag, reducing your mileage by 10%.

14. Drive steadily. Slowing down or speeding up wastes fuel. Also avoid tailgating - the driver in front of you is unpredictable. Not only is it unsafe, but if affects your economy, if he slows down unexpectedly.

15.Think ahead when approaching hills. If you accelerate, do it before you reach the hill, not while you're on it.

16. Do not rest left foot on floor board pedals while driving. The slightest pressure puts "mechanical drag" on components, wearing them down prematurely. This "dragging" also demands additional fuel usage.

17. Avoid rough roads whenever possible, because dirt or gravel rob you of up to 30% of your gas mileage.

18. Use alternate roads when safer, shorter, straighter. Compare traveling distance differences - remember that corners, curves and lane jumping requires extra gas. The shortest distance between two points is always straight.

19. Stoplights are usually timed for your motoring advantage. By traveling steadily at the legal speed limit you boost your chances of having the "green light" all the way.

20. Automatic transmissions should be allowed to cool down when your car is idling at a standstill, e.g. railroad crossings, long traffic lights, etc. Place gear into neutral position. This reduces transmission strain and allows transmission to cool.

21. Park car so that you can later begin to travel in forward gear; avoid reverse gear maneuvers to save gas.

22. Regular tune-ups ensure best economy; check owner's manual for recommended maintenance intervals. Special attention should be given to maintaining clean air filters... diminished air flow increases gas waste.

23. Inspect suspension and chassis parts for occasional misalignment. Bent wheels, axles, bad shocks, broken springs, etc. create engine drag and are unsafe at high traveling speeds.

24. Remove snow tires during good weather seasons; traveling on deep tire tread really robs fuel!

25. Inflate all tires to maximum limit. Each tire should be periodically spun, balanced and checked for out-of-round. When shopping for new tires, get large diameter tires for rear wheels. Radial designs are the recognized fuel-savers; check manufacturer's specifications for maximum tire pressures.

26. Remove vinyl tops - they cause air drag. Rough surfaces disturb otherwise smooth air flow around a car's body. Bear in mind when buying new cars that a fancy sun roof helps disturb smooth air flow (and mileage).

27. Auto air conditioners can reduce fuel economy by 10% to 20%. Heater fan, power windows and seats increase engine load; the more load on your engine, the less miles per gallon.

28. Remove excess weight from trunk or inside of car - extra tires, back seats, unnecessary heavy parts. Extra weight reduces mileage, especially when driving up inclines.

29. Car pools reduce travel monotony and gas expense - all riders chip in to help you buy. Conversation helps to keep the driver alert. Pooling also reduces traffic congestion, gives the driver easier maneuverability and greater "steady speed" economy. For best results, distribute passenger weight evenly throughout car.

30. During cold weather watch for icicles frozen to car frame. Up to 100 lbs. can be quickly accumulated! Unremoved snow and ice cause tremendous wind resistance. Warm water thrown on (or hosed on) will eliminate it fast.

Site of interest: http://www.fueleconomy.gov
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Old 09-08-05, 02:06   #2 (permalink)
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More tips

# Follow the Recommended Maintenance
A vehicle that is well maintained means it will operate with greater efficiency. This not only improves your overall vehicle performance, but it will improve your fuel economy as well. Fouled spark plugs, a dirty air filter or clogged fuel filter will all affect your fuel economy. According to the U.S. Department of Energy (DOE), replacing a clogged air filter can increase your mileage by 10 percent, while replacing an oxygen sensor could result in an improvement as high as 40 percent. Proper maintenance also means using the right octane gas and the recommended grade of motor oil. Using the recommended types for your vehicle will give you optimum fuel economy — and can save you money as well. Check your owner's manual for your vehicle's recommendations and have maintenance performed regularly by a dealer or reputable mechanic.


# Keep Your Tires Properly Inflated
Underinflated tires require more energy to roll, which translates into more frequent fill-ups. You can improve your fuel economy by about 3.3 percent if you keep your tires inflated properly, according to the DOE. The psi number noted on the sidewall of your tires is the maximum pressure of the tire and is not the proper inflation level for your car. Your vehicle manufacturer will list the recommended tire pressure in your owner's manual or a sticker on the doorjamb of the driver-side door. Buy a tire-pressure gauge and check your tires monthly, adding air as necessary.


# Take a Load Off
Heavier vehicles require more energy to move, so carrying around excess weight will also affect your mileage. Empty out your trunk (or even your backseat) of unnecessary items. An extra 100 pounds in the trunk will reduce your fuel economy by 1 to 2 percent in the typical vehicle. If you have a roof rack or roof carrier, install it on your vehicle only when absolutely necessary. Not only does the carrier add extra weight, but it also increases the aerodynamic drag on the vehicle, which further contributes to a loss of fuel economy.


# Don't Drive Aggressively
We're not talking road rage here, but the type of driving many people do when they are in a rush. Mashing the accelerator pedal from a stoplight, braking hard and speeding all contribute to a decrease in fuel economy. Give yourself extra time to get to your destination and think "steady and smooth" as you drive. On surface streets, driving at the speed limit will give you mostly green lights, which improves your gas mileage as well as reduces the wear on your brakes. On the highway, the DOE says that every 5 mph you drive over 65 mph represents a 7-percent decrease in fuel economy.


# Use the Highest Gear Possible
Cars are designed to start in the lowest gear possible because that's where they have the most power, but that power translates to an increase in fuel consumption. To improve your fuel economy, drive in the highest gear possible when you are cruising at a steady speed, such as on the highway. If your vehicle has an automatic transmission with a "sport" mode, it's most likely that this is a computer program designed to shift later (and therefore keep you in a lower gear longer). While this gives you greater performance, driving in "sport" mode will also decrease your fuel economy.


# Use Cruise Control — Selectively
Using cruise control can improve your gas mileage by helping you maintain a steady speed, but only if you are driving on mostly flat roads. If you are driving in hilly terrain, using cruise control typically causes your vehicle to speed up faster (to maintain the preset speed) than it would if you were operating the accelerator yourself. Before you push that cruise control button, think about the terrain ahead.


# Think Clean
Keeping your car washed and waxed improves aerodynamics and therefore affects fuel economy. Engineer Tom Wagner, Jr. reported to Stretcher.com (as in stretching your dollars) a 7-percent improvement in fuel economy, from 15 to 16 mpg, during a 1,600-mile road trip.


# Avoid Excessive Idling
When a car is idling, it is using fuel, yet not going anywhere. This translates to 0 mpg. When you leave your car running while you are waiting in line at the drive-thru, or as you wait outside your kids' school, you are wasting fuel. It is more efficient to turn the engine off while you wait and then restart the car. If that's not practical (like in the line at McDonald's), then park the car and go inside instead.


# Think Before You Vent(ilate)
Running your air conditioner does cause your vehicle to consume more fuel, but driving with your windows rolled down can be even worse due to the increase of drag on the vehicle. If you are driving slowly, such as around town or in city traffic, then you are better off leaving your windows open, if at all possible. For highway driving, roll up the windows and turn the air conditioning on.


# Combine Your Errands
A little planning can make a big difference in fuel economy. When your engine is cold, it uses more fuel than when it is warm. Combining errands can improve your gas mileage because your engine will be warm for more of the trip. It might also mean you travel less total miles. According to the DOE, several short trips all begun with a cold start can use twice as much fuel as a single, longer trip that covers the same distance.
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Old 09-09-05, 03:27   #3 (permalink)
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Thinking about being a very smooth driver will probably save some MPG. I would however dispute the savings caused by a washed and waxed car.
 
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Old 09-09-05, 04:01   #4 (permalink)
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That was a lot of stuff....driving habits CAN really make a difference, but IMO the two most overlooked things in the general populace are keeping your engine in good tune and keeping your tires inflated properly.
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Old 09-09-05, 06:27   #5 (permalink)
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I am cutting my fuel consumption by more than 50% on my daily commute.

By going from this....


To this....


The Mustang will get to spend more time in the stable now. She currently has 62,000 miles on her.
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Old 09-09-05, 07:44   #6 (permalink)
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This works for me.

 
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Old 09-09-05, 08:48   #7 (permalink)
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#21 and #27 are for the ANAL fuel-penny-pincher. You'll see better savings by driving with a tailwind, not driving at night (extra alternator drag for lights), and not driving during the heat of the day. If you're this concerned about fuel economy, you better not be driving into head winds!

I personally don't believe #6 at all. Even when this was written, most fuel tanks at gas stations were almost certainly buried. Once you get just a few feet down, you get to the part of the earth that maintains a constant temperature from season to season - the cool-down during the evening/night will have no bearing on the fuel density at all...

rjstaaf: I wish my wife would let me make the same trade; had to sell my bike just before we married, and I won't stay that way if I come home with another.....
 
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Old 09-09-05, 09:02   #8 (permalink)
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Forgot another thing: narrow tires (aside from being much better in the snow) are much better for fuel economy. On my Focus, I went up in size 20mm, and promptly lost 6mpg (about 20%). Even deep-tread, heavily-siped snow tires will bump me back up about 4mpg...

Just imagine all the Corvettes, BMWs, Vipers, et al driving around on 14x4.5 training wheels!
 
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Old 09-09-05, 09:29   #9 (permalink)
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Quote:
Originally Posted by RCBuddha
With all the talk about gas prices going up and up and up....I was thinking that maybe we should share some gas-saving tips....I'll start off with a list from this site: http://www.howtoadvice.com/savinggas

2. Be sure the automatic choke is disengaged after engine warm up... chokes often get stuck, resulting in bad gas/air mixture.

4. Avoid "reving" the engine, especially just before you switch the engine off; this wastes fuel needlessly and washes oil down from the inside cylinder walls, owing to loss of oil pressure.

21. Park car so that you can later begin to travel in forward gear; avoid reverse gear maneuvers to save gas.

25. Inflate all tires to maximum limit. Each tire should be periodically spun, balanced and checked for out-of-round. When shopping for new tires, get large diameter tires for rear wheels. Radial designs are the recognized fuel-savers; check manufacturer's specifications for maximum tire pressures.

27. Auto air conditioners can reduce fuel economy by 10% to 20%. Heater fan, power windows and seats increase engine load; the more load on your engine, the less miles per gallon.

28. Remove excess weight from trunk or inside of car - extra tires, back seats, unnecessary heavy parts. Extra weight reduces mileage, especially when driving up inclines.

30. During cold weather watch for icicles frozen to car frame. Up to 100 lbs. can be quickly accumulated! Unremoved snow and ice cause tremendous wind resistance. Warm water thrown on (or hosed on) will eliminate it fast.

Site of interest: http://www.fueleconomy.gov
2. What is this automatic choke that I have never heard of before? I'm not Mr. Know It All, but I have never heard of this.

4. I have never met ANYONE who revs their engine before they shut it off, why would you Obviously it would waste gas, and your time too. I don't pull into a parking space, rev the engine, go woohoo look at me, and then get out.

21. Thats a little extreme, the amount of gas saved by not backing up could easily be used trying to position yourself into a spot where you don't have to back up.

25. That is horrible advice, inflate your tires to the maximum pressure. The max on mine is 40+ PSI (not sure the exact number right now). That is just unsafe though, and would lead to huge amounts of wear down the middle, meaning you have to replace your tires sooner, probably costing more than the gas milage difference. Also, wouldn't wider tires reduce economy? If it increased them, how come my bicycle tires are wider than some economy car tires?

27. Power windows/seats reducing your milage? That is starting to get extreme...

28. That is just a bit on the wrong side of practical, removing spare tire, back seats. Hey, maybe I'll get rid of the door panels, headliner, and carpet since I don't really need/use it. Granted, those are some heavier parts listed, but still.

30. 100 pounds of ice on your car, sound's like a blizzard you wouldn't wanna be driving in. Also, isn't tossing hot water on your car a bad idea?

There are some good things listed here, but some of the ones I listed I find a bit weird.
 
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Old 09-09-05, 11:59   #10 (permalink)
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I've found over the past few months during my business travel by car that reducing my highway speed from 70+ mph to 60-65 mph has resulted in a 18-20% fuel savings. I've also switched to a light weight synthetic oil (Mobil 1) which probably helped somewhat.

Piece of advice for those contemplating a 60 mph highway speed: Some inattentive drivers (cell phone folks) will close on your rear bumper pretty fast. This includes big rigs, suv's, you name it....just watch yourself out there cause they aren't.

The percentage saved is pretty good...the higher the gas price the more in real $$ you save.

I've lived through the 55 National limit and it wasn't any fun, but if people "voluntarily" dropped their speed, the savings nationwide would be remarkable.

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Old 09-09-05, 12:25   #11 (permalink)
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Quote:
Originally Posted by axnff
rjstaaf: I wish my wife would let me make the same trade; had to sell my bike just before we married, and I won't stay that way if I come home with another.....
I can't say the wife likes the idea but, she and the kids went with me to look at it and trailer it home from Columbus, GA. She is scared of bikes but, she did go riding with me a lot when I had the Goldwing years ago. She won't go near the VFR Before the Goldwing I had a CBR1000 and she rode on that with me "once" and vowed to never do that again. She felt much safer on the Goldwing which was the main reason I bought it. I still have the Mustang, I drive it on days when the weather is just too nasty for riding the bike.
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Old 09-09-05, 12:45   #12 (permalink)
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Quote:
Originally Posted by UnsanePyro
Also, wouldn't wider tires reduce economy? If it increased them, how come my bicycle tires are wider than some economy car tires?
They said larger diameter... Lower your final gear ratio.
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