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HHO gas Fuel Saving Tips

Fuel Saving Tips #1 

Skip gears

In the UK, learner drivers are now advised to skip gears to get up to top speed quicker and more efficiently. On slight downward hills, it's easy to pull away in 2nd, when you reach 30 MPH, select 4th or take the revs a little higher and select 5th. From 0-60 you only need to change gear twice so the engine doesn't go through the full rev range in every gear. Similar patterns can be applied when downshifting too.

posted by Draigflag on November 19, 2014

this tip works for 86% of voting Fuelly members.

Deactivate Cruise Control on Steep Downgrades

Newer cruise control functions will actually hit the brakes to maintain set speed if you begin to accelerate down a steep hill, so that steep downgrade that you think is really going to help your MPGs could be only helping a little. Turn your cruise control off if you think the grade is steep enough. Remember, the faster you have the cruise set to, the lesser chance you have of this happening, as drag naturally increases with speed, which will require your engine to maintain that speed even when going down the hill. The slower your cruising speed equals a greater chance that your car will pick up steam going down that hill.

posted by RieBauer17 on November 15, 2014

this tip works for 56% of voting Fuelly members.

Over inflate tires at least 10% for more mpg

I have found that on my tires that are rated at 35psi that when I inflate them while hot to 44psi (suggested max for Mich Defenders) that I get about 10% more mpg. Honda civic VX and my Acura Rl.

posted by softciyVX on November 10, 2014

this tip works for 32% of voting Fuelly members.

Safe driving essentials

1 - Focus, and concentrate all the time 2 - Take your time 3 - Scan, keeping your eyes moving 4 - Anticipate “what if?” 5 - Always drive at such a speed that you can stop within the distance seen to be clear 6 - Maintain a minimum 2-second following distance from the vehicle in front.

posted by WickedWeasel on November 7, 2014

this tip works for 88% of voting Fuelly members.

The Power of Coasting

Don't forget that when you're coasting, your car isn't using fuel. The car's momentum is actually turning the motor with the friction your tires have on the road. Make sure to reclaim some of the energy you spent to get your vehicle moving by coasting. Pay attention to stoplights ahead, learn the light patterns, and you can easily bump your AVG MPG by at least 5. The more braking, the more you're decreasing your fuel economy by turning that energy into heated brakes. Don't waste the energy you spent getting up that hill by excessively braking while going down. Drive safe, but keep that fuel economy in mind!

posted by falas on November 5, 2014

this tip works for 88% of voting Fuelly members.

Choose right vehicle

Use right vehicle for the work. For example, for city commuting in good weather, if you not need to carry much cargo with you, you can use a motorcycle, or even cub-bike ( underbone, step-throught) for commutiong. You have a big win throught that - no rush hours ( who consume your time and fuel), and much less fuel consumption - on my one chinese underbone i get into 2 litres per 100 km! my 600cc motorcycle get around 5 - 6 litres per 100 km in city, and my car - around 8 - 9 litres to 100 km. and there is a rush around...

posted by drago76 on October 29, 2014

this tip works for 57% of voting Fuelly members.

Turn A/C On While Traveling Downhill/During AFC (Free A/C)

On a modern car, auto fuel cut off will be activated when you remove your foot from the accelerator while traveling downhill. If you want free intermittent A/C turn it on while traveling downhill or slowing down with your foot off the accelerator. You may feel a very slight increase in engine breaking when you turn the A/C on but it is minimal. There is a kit available online that activates the A/C when auto fuel cut off is activated (I don't know where you can buy it as it was a while ago).

posted by Swiftkick on October 26, 2014

this tip works for 45% of voting Fuelly members.

Partialy Block Off Your Radiator Grill.

This especially applies to diesel vehicles. The sooner your engine gets up to temperature the more efficient it will be. For example my (diesel) car gets almost half the MPGs it would get when up to temperature. I have blocked off the lower grill (with black duct tape) which allows my car to warm up faster and keep a sturdy temperature. This also improves aerodynamics of your vehicle (if done correctly). I am doing this in about 6-15 Celsius weather and see a decent increase in MPG and I can also use my heaters earlier. IMPORTANT Be sure not to block off your intercooler (if fitted) as this helps MPG and keeps intake air temps low and intake air density higher. It is extremely unlikely your vehicle will overheat but for the first few journeys keep an eye on your coolant temp.

posted by Swiftkick on October 26, 2014

this tip works for 47% of voting Fuelly members.

Turn it off quickly

Whenever pulling into your spot, turn the vehicle off immediately if possible, then roll up electric windows etc, if your vehicle allows for this.

posted by BDX2 on October 22, 2014

this tip works for 63% of voting Fuelly members.

Avoid short distance

Daily short distance travel burn more fuel to warm up the engine thus reduces car kpl. Proper planning of your trip is crucial to high kpl.

posted by cheeyc on October 22, 2014

this tip works for 93% of voting Fuelly members.

Tire pressure

the recommended tire pressure is listed on the inside of your drivers side door, Front and Back check it often the seasons are changing and so is your tires air pressure. NOTE check it before you leave, Not after its been driven or if its been sitting in the SUN for a while.

posted by wasabi2u on October 19, 2014

this tip works for 96% of voting Fuelly members.

Avoid Stations Taking on Fuel

If you see a station being refueled or you know it has been refueled in the last couple of hours, go somewhere else. The turbulence from refilling the storage tank can kick up any muck and water laying on the bottom of the tank.

posted by rdskill on October 16, 2014

this tip works for 65% of voting Fuelly members.

Keep that diesel fuel tank full

Diesel fuel is highly hygroscopic. That means it sucks moisture and water out of the air, on a daily adiabatic cycle. The more air stored in the fuel tank, the more moisture is drawn into the fuel tank, condensing on the inside walls of the fuel tank, as the tank breathes in and out with the daily heat cycle. Keeping your diesel fuel tank fuel limits the amount of moist air drawn into your fuel tank, and into your fuel during humid seasons. This is less a problem in the arid SouthWest seasons with relative humidity below 20%

posted by Magalicious on October 16, 2014

this tip works for 40% of voting Fuelly members.

Know your shift points

I have 2 w-body GM cars 1 with 3400 and 1 3800 n/a. So here is what I do: In short: 1. Accelerate slowly 2. Know your shift points and stay near the shift. 3. Don't speed (why it doesn't save time really) In long: 1. Accelerate slowly usually 1500 RPM or so (I know it upsets some people BUT in the day to day city driving [and highway] I always catch up to those who pass me) 2. Know your transmission. If I am at 40-45 mph in my 2004 Grand Prix GT1 (3800 engine), It will shift around there and keep the RPMs around 1000-1200 to maintain that speed which is great for most driving in city. Try to keep your speed need where your transmission shifted but beware going up hills will cause it to down shift and RPM go up so play with it. 3. No need to speed! Unless you want to save 30 seconds or so (usually less) Why speed? I have always seen people accelerate past me only to catch up to them at a light or pass them as the turn into their neighborhood. Take it easy! The time you save is negligible. Your car will love you more with less maintainence and better MPG

posted by dickawg on October 12, 2014

this tip works for 80% of voting Fuelly members.


Conserve fuel by anticipating - ease off the throttle early on approaching red lights or queued traffic. If the light changes or traffic moves before you get there, you avoided a full stop (which is the most expensive fuel consumer). Added bonus, you reduce wear on brakes and might arrive more relaxed to boot!

posted by F1Rumors on October 9, 2014

this tip works for 99% of voting Fuelly members.

Tire pressure...

If you read the side wall of a tire you will see it tells you the max pressure @ the max load. This is because you will need this pressure to carry that load. If you are at lower load you will need a lower setting. Pressure has to match the load and when it does your tires will wear perfectly flat. For this reason you should never follow the recommended pressure from the car makers. You should be working out your own for your car or truck as you normally load it. With that in mind, most times you can run it higher and gain more savings in fuel then lose from wearing the tires out faster, all without hurting safety. But, also keep in mind to high can be a safety issue if you go to far. It is however always safer a to 5 pounds high over be 5 pounds low. When they are low the side walls will flex more building way more heat and destroying the tires. It will also reduce your control of the car when the tires just fold over when you are trying to turn.

posted by Crf450r420 on September 28, 2014

this tip works for 35% of voting Fuelly members.

Know before you go...

Don't just do the neutral cost or downshift until you know your vehicle. If you get a cheap bluetooth to OBDII adapter on say Amazon. You can use an app like Torque to see how your car works. Both my girlfriends and I have small cars one 1998 the other 2006 that both don't have trailing throttle (the injectors are not shut off when intake is under high vacuum) even though they are both well into the years you would guess they have such. This setup will also give you a way to add instant and average MPG, so you can develop efficient habit that fit that car. Then there are a ton of other things like code reading which also come with it.

posted by Crf450r420 on September 28, 2014

this tip works for 77% of voting Fuelly members.

Want good FE? I want to help

1. I have found that cars get better mileage on better fuel. For instance keep track of different gas companies and what you get from them. For instance: my 2004 Ford Taurus gets better mileage from Shell or Cenex or BP vs some mom and pop stations. Just cause its cheaper don't mean its good gas! These name brand places also tend to use detergents and additives to help with engine cleanliness with prolonged usage. 2. If you can afford it and your car has less than 100,000 miles on it switch to synthetic oils. Less friction in engine/ transmission = longer life and better fuel economy. 3. If planning a longer trip, drive part of it while sun is down. You will achieve better mileage for several reasons: less traffic set your speed n go. And you will have a cooler engine and you may not have to use the AC as much. 4. Always fill your tank. If you live in the north like I do, in winter you never know what could happen when weather is bad. Better to have fuel and not need it, than to need it and not have it. Less chance of a freeze up from watered fuel (cheapskate stations) and you keep your fuel pump cool and save money on repairs! Expensive ones! Gas tank levels of less than 1/4 is playing with fire especially with older and higher milage vehicles. 4. Read these tips here on this page! I've probably gained a couple miles in overall economy by listening and finding what works! ;) and it has made me a better and more patient driver and more responsible. 5. If you're patient you can save fuel by paying attention to, AND driving speed limits! I do almost 100% of the time and I see about a 2mpg difference. Think about it: if you drive 60 instead of the posted 55 how much time are you really going to gain huh? 5 mins? Plus, you won't need to romp on the gas to pass eevery time you turn around. I get passed all the time and I usually see them at the next light anyways. Don't be impatient. If someone is driving the limit: simply re set your cruise and it won't be an issue. 5. When you see the 1/5 mile slow down speed sign, coast to new speed limit and reset cruise. Even if youre a little early.Speed limits start AT the sign, you'll optimize how much brakes are used and you avoid damage to your driving record and insurance premiums ;)

posted by hylander89 on September 21, 2014

this tip works for 50% of voting Fuelly members.

Consider a cold air intake

Letting your engine breathe better both improves power and economy, as well as giving a sportier note and better response at lower revs, allowing you to shift out sooner. Many auto manufacturers now offer these to be installed at your dealer, and if done at the dealer it won't void your warranty.

posted by Texas on September 19, 2014

this tip works for 18% of voting Fuelly members.

Back Into Parking Spots

By backing in (or pulling through to park nose-out, in lots that have two spots nose-to-tail), you do your reversing when the transmission is warm, eliminating having to drive in Reverse with a cold transmission and engine. You'll eliminate the loud "clunk" (which is hard on the transmission) and also only go through a single acceleration cycle on a cold engine when departing your destination. It's also safer, since you will see the surrounding area immediately before backing in, instead of seeing the area, getting into and starting your car, and then backing out.

posted by F14Scott on September 14, 2014

this tip works for 87% of voting Fuelly members.

Use the car that is best for your trip

Most people own more then one car, A smart person will own cars that fit different applications. Find out which car is more efficient on the highway, and use it strictly for long distance trips and keep your gas guzzlers in town where less distance is traveled.

posted by Macbriggs2 on September 4, 2014

this tip works for 49% of voting Fuelly members.

Civic HX leanburn

On the 7th generation civic HX, Keep it below 68 mph to stay in lean burn mode.

posted by 01silvercivichx on September 3, 2014

this tip works for 42% of voting Fuelly members.

How to get the most torque , and best MPG from a DIESEL motor.

When travelling on the Motorway class roads, use your Cruise Control, but set it 5km under the posted speed limit, and when approaching the valley of a long climb, (say 50 - 100m before the lowest part) let the cruise determine the amount of fuel to give the engine. As the engine will 'Sense' the amount of Incline, as it is coming out of the flat and approaching the hill, it will give just enough fuel to maintain the speed at the speed set (say 90 km/hr). After the Car has topped out at the flat, then you can take the cruise up to say 100Km/hr (if it is Daytime and clear weather with no traffic). Check your engine specifications, you will be surprised, that the torque curve is not flat over the RPM Range from Idle to Maximum Torque (1250 for Some Diesels), and then declines again as RPMs increase from 1250 to redline.

posted by CobourgVeeDubYah on August 29, 2014

this tip works for 23% of voting Fuelly members.

Bad tip: Only filling up half-way

I just wanted to point out that MOST vehicle's fuel pumps are mounted in the gas tank, which means that they are cooled by the fuel, running at less then a quarter tank takes that cooling feature away from them and will cause them to wear out or even fail a lot faster due to excessive heat build-up, and if your only going from 1/2 to 1/4 every time, you are most likely going to spend more time looking for the cheaper good deal gas and driving out of your way to get it, causing you to spend more money in gas. Depending on your vehicle, shop and the parts it uses, a fuel pump replacement could cost you 1000$.. 300$ for parts 700$ for labor. The amount of money you are going to save is going to be way offset by the cost of having that fuel pump replaced, as most fuel pumps are very expensive for the OEM. Unless you know that your fuel pump is not mounted in the gas tank, and is therefore mounted under the vehicle and cooled by air, I would not just do half-fuel ups.

posted by SilverBullet1997 on August 28, 2014

this tip works for 68% of voting Fuelly members.

Top tier gas

The stations that use top tier gasoline use detergents that will reduce deposits on fuel injectors and intake valves. Check toptiergas.com and read about it

posted by cmaxlen on August 19, 2014

this tip works for 75% of voting Fuelly members.

Speed-O and Odometer error

Vehicle speed and odometer may have different errors. Most vehicles with ABS option the vehicle speed is normally taken from one wheel or averaged among the 4 wheels. The Odometer is recorded from an output on the transmission. If you do not have ABS on your vehicle the Speed and Odometer is read from the Transmission. The last option is you have ABS, but the manufacture was still reading it from the transmission. The best method for insuring the accuracy of the Speed-O-meter is to test it against a GPS. The best method of insuring the accuracy of the Odometer is measuring it against a known distance, such as the milepost of an interstate highway over a distance of 100 miles or more. GPS Trip distance measurement is inaccurate.

posted by racenviper on August 18, 2014

this tip works for 55% of voting Fuelly members.

Oncoming traffic

Ever felt the wind from oncoming traffic? One vehicle is not so bad, but we usually don't ever just have one car pass us in the opposite direction. Giving as much distance as is safe between you and oncoming traffic is not only safer, but can help keep your fuel mileage from dropping unnecessarily, especially as traffic gets heavier.

posted by sparkn on August 15, 2014

this tip works for 79% of voting Fuelly members.

US Imperial to CAN Metric conversions

Canadians travelling in the US: Feel free to make a copy and use this Google spreadsheet to convert your US to CAN fill-ups since you can't flip back and forth in Fuelly. https://docs.google.com/spreadsheet/ccc?key=0AuiLvaul1obRdFAyZ3hvTTc3NDIxcnZ3VGVOR1A1RWc&usp=sharing You will need to have a Google account and then you can make your own copy first. Go to File > Make a copy.

posted by gory on August 14, 2014

this tip works for 60% of voting Fuelly members.

Find the sweet spot of needed throttle pressure.

When traveling around highway speeds note your throttle input. Find the speed that requires the least amount of pressure on the accelerator/throttle. There are lots of variables that effect this and it will change day to day. Slower may not always be more efficient. Your car may need more rpms, higher speed to be efficient. An easy way to monitor this is through the addition of an "eco gauge" that can easily be plugged into your cars computer.

posted by Lokis_Tyro on August 13, 2014

this tip works for 82% of voting Fuelly members.

Turn off the engine

When sitting at a red light (unless you're right at the front) or waiting for a passenger turn off the engine. Saves fuel and pollution. Lights on orange - restart the engine ready to go. The heater can still put out warm air or the aircon cool air for a little after the engine is switched off.

posted by xj53c on August 10, 2014

this tip works for 28% of voting Fuelly members.

Fuel Saving Tips #2

Be sure that your engine is idling well

An engine idling above 1000 rpm's is a bad symptom of a failure of it, but it maybe minimal so you keep on running it that way because you don't notice it or simply you think that it can run perfectly that way, that it's just an odd thing. Well, be sure that the engine is idling at the speed that the owner's manual advise, if it's not something may be wrong as fuel injectors, throttle bodies, intake systems, etc... Those reparations are simple and if you don't do them, besides having a mechanical failure you'll be wasting fuel.

posted by judacomadc on August 6, 2014

this tip works for 42% of voting Fuelly members.

Don't turn on the engine if its not needed

There are some situations in which turning on the engine is not needed, in my case I do it when I have to move some feet my car to give way on a parking lot or so, taxi drivers in my city do it as well. It may sound dumb, but by doing this you avoid operating the engine when less efficient because of the cold starts. Also, when you hit a big traffic jam like when some accident happened and traffic is not moving you can turn it off, or if a cop or somebody stops you to have a chat you can switch it off as well. The thing is: try to use the engine only when is really needed.

posted by judacomadc on August 6, 2014

this tip works for 54% of voting Fuelly members.

Set mileage calculator to instant-read

Instead of leaving your mileage calculator on the default average MPG setting, move it to "instant-read" mode. You'll get immediate feedback on how various actions affect your MPG. For example, I learned that tailing a semi on the highway increases my MPG 7-10 mpgs, and turning on the AC decreases it by 5. As a result of this instant feedback, I have learned how to become an even more gas-efficient driver!

posted by Juttah on August 4, 2014

this tip works for 88% of voting Fuelly members.

Use high-quality synthetic lubricants.

The most inefficient part of your car is the motor. A minority of the potential chemical energy that enters your cyclinders will be converted into usable power; most of the energy in the fuel is lost due to pumping losses, friction, and heat-transfer. Reducing the friction in your engine, transmission, and differentials by using a PAO based, non petroleum lubricant (Like Amsoil, Redline, or Royal Purple), will increase your feul efficiency 3-10%. The effect is most noticable in large 4WD vehicles, and is less noticable in lighter cars. For instance, my 2001 2.3L Accord milage increased by about 7% after switching, as you can see in my fuel history.

posted by ChampagneRocket on August 4, 2014

this tip works for 69% of voting Fuelly members.

Reduce braking to save gas

You will get better mileage by using the brakes as little as possible, maintaining speed and momentum wherever you can. You don't even need brakes at all, if the horn works!

posted by Stoopy on July 31, 2014

this tip works for 83% of voting Fuelly members.

Modding your off-road vehicle: what to expect

If expectations are in line with reality, unhappiness is avoided. When modifying a Jeep or other SUV, keep in mind: - 2 highway mpg for Roof Basket [reduced aerodynamics] - 3 highway mpg for Larger Tires (1.5 inches taller than stock in my case; suspension lift may be required to run larger tires) [taller tires reduce mechanical advantage, like running in a higher gear. Larger tires are also heavier. Results will vary.] - 1 highway mpg for adding steel skid plates, rock sliders, bumpers, etc. [extra weight] There is a trade-off between mpg and off-road prowess. This trade-off can be partially overcome by spending even more $$$: +2 highway mpg for Re-gearing the differentials (e.g., from 3.73 to 4.10 ring & pinions). This mod can regain your rig some power and mpg if you are running tires 1.5+ inches taller than stock, but will decrease mpg with the stock tire size. [increases mechanical advantage, offsetting larger tires. Results will vary.] Example: V6 Jeep Liberty with roof basket, 4 inch lift, larger tires (245/75/R16; stock 225/75/R16), but not yet re-geared: Stock Configuration: 14 mpg city, 22 mpg highway Modded: 11 mpg city, 16 mpg highway

posted by lfhoward on July 28, 2014

this tip works for 61% of voting Fuelly members.

AC Setting helps MPG

Cars typically are more fuel efficient when the air conditioner is set to re-circulate interior air. This is because keeping the same air cool takes less energy than continuously cooling hot air from outside. Of course, turning off the air conditioner saves even more fuel. For driving around town and not at highway speed, keeping the windows open and the air conditioning off is the more fuel-efficient way to go, if you can stand it.

posted by 1motime on July 27, 2014

this tip works for 89% of voting Fuelly members.

Choose the better route.

If you choose the route closer to sea level, and higher in humidity your engine will run more efficiently then EPA estimates. Water vapor adds to the combustion pressure, giving you more HP.

posted by Macbriggs2 on July 25, 2014

this tip works for 29% of voting Fuelly members.

Stop wasting your time.

Stop wasting your time waiting for yourself to get hungry, or waiting for the other shoe to drop. Make an errand day like an adult, load that kitchen up and stop making trips to grab refreshments and food, you can make that at home for cheaper and you know it. That'll save you a ton in gasoline, not to mention all the savings not paying people to make your meals / drinks !!!

posted by Macbriggs2 on July 24, 2014

this tip works for 89% of voting Fuelly members.


For those of you with manual shift vehicles: If you're not using the a/c constantly, coasting to stop lights in neutral with the engine off, and keying back on as the light turns green, can greatly increase the gas mileage of any vehicle. One long, light pump of the brake pedal will not deplete the brake booster, leaving you with plenty of braking power as you come to a stop. This method alone gave me an extra ten mpg on my daily drive, which adds up fast!

posted by cowmeat on July 20, 2014

this tip works for 28% of voting Fuelly members.

Cruise control on roads with hills

Never use cruise control on roads with a lot of hills. You will waste more gas than you would with normal acceleration. For instance when going down hill take your foot of the gas pedal and coast down. Once you get leveled out use the gas pedal again. Cruise control is good for the Freeway/Highway.

posted by AdamStryker on July 18, 2014

this tip works for 82% of voting Fuelly members.

Hybrids - use EV mode if your journey starts at a slow junction

Hybrids like the prius have to run the gasoline engine at startup to warm up the catalytic converter. But if your commute starts with a junction onto a busy road, your gasoline engine will be running for several minutes to do this while you wait. Instead, switch to EV mode at startup, and keep in EV mode until you finally get out into the traffic. Now you need your gasoline engine to get up to speed, so it can finally warm up the cat converter now.

posted by willsmithorg on July 18, 2014

this tip works for 81% of voting Fuelly members.

Tyre pressure - handbook or sidewall?

Often the maximum inflation pressure written on your tyre's sidewall will be considerably higher than the pressures recommended in your vehicle's handbook. Inflating to the sidewall rating may well give slightly better fuel economy, but the extra air pressure will usually cause the tyres to bulge in the middle of the tread and wear unevenly, meaning you'll need to buy new rubber much sooner. Instead, always inflate to the recommended tyre pressures in your vehicle's handbook.

posted by weeblesfall on July 17, 2014

this tip works for 57% of voting Fuelly members.

Weight matters

If you have a large fuel tank or a small engine in a midsized or large car, try filling up only half way. The more fuel you add, the more weight you add, and therefore the more fuel you will use to move all that fuel.

posted by Gregmech on July 14, 2014

this tip works for 14% of voting Fuelly members.

Get moving

Get moving from a stopped position- transmissions are stll designed to get the vehicile moving from a stopped position. Getting up to speed is still the optimum way to get the best gas mileage.

posted by Caddie149 on July 5, 2014

this tip works for 25% of voting Fuelly members.

Direct Injection Motors and Coasting

With more modern cars switching to Direct Injection, you'll want to start coasting while in gear instead of in Neutral. In these engines fuel is generally nearly cut off if the car is in gear and moving, utilizing less fuel than if your car was in neutral and having to fuel itself to maintain idle rpm. If you have a way to monitor your AFR you'll see it go into the 40's and 50's instead of 14's. This is not only safer while coasting down hills or to stops, but now it's rewarding as well.

posted by dyn085 on July 4, 2014

this tip works for 92% of voting Fuelly members.

TDI's and excellent MPG's

Driving a TDI in a manner as if you were assuming you had no brakes at all, and requiring planning far far ahead, by braking with the transmission and shifting, so that you make all green lights with the smoothest and least amount of throttle input changes is what leads to extremely efficient driving techniques and maximum MPG's. Train yourself to drive as if you had no brakes, at all, and that touching the brake pedal is a huge penalty... because, it is, in the quest for Max MPG's.

posted by Magalicious on July 4, 2014

this tip works for 91% of voting Fuelly members.

Half a fuel up???

When refuelling, only fill your tank half way, you'll get better MPG this way as you're not 'carrying' an exess of heavy liquid around with you.

posted by Macdemon on July 2, 2014

this tip works for 6% of voting Fuelly members.

Engine braking

the ecm most on newer cars (fuel injected 95+) stops putting fuel into the engine when you let go of the throttle and the car needs no help to go forward, so down shifting before stops and letting the car coast down in a lower gear can keep the engine from idling and using fuel, plus you will be ready to go at a better gear if the light turns green before you have to stop.

posted by Beto84 on June 30, 2014

this tip works for 92% of voting Fuelly members.

Add air to tires during low humidity weather

The more water vapor in your tires, the more variation there will be in air pressure between cold and hot temperatures. A science experiment from grade school proves this - add steam to a can, seal it, then freeze it. The can collapses. Most air compressors do not have a dryer. Therefore, the water vapor in the air is compressed into your tire along with other atmospheric gasses. A proposed solution is to always add pure nitrogen, which does not contain water vapor. However, this can be inconvenient and costly. A "free" answer is to practice adding air to your tires when the dewpoint is low during cold months or on relatively dry days in the summer. If you believe you have a lot of water vapor in your tires now, you could let out most of the air in your tire after they are hot from a highway drive on a dry day, then add new air back up to the proper pressure.

posted by EngrPaul on June 27, 2014

this tip works for 78% of voting Fuelly members.

Slow Down on Highways!

Honestly the easiest thing you can do to increase mileage that WILL work guaranteed. There is significant fuel savings when you drop highway cruising speeds to 65 from 75, and even more when you go from 65 to 55. Personally I drive 55 mph everywhere and am reaping the savings. I am currently averaging 22-26% greater highway fuel economy then the listed epa listed sticker hwy mileage on my Wrangler, you just have to make sure to keep in the right lane to avoid upsetting the other drivers too much, although a finger or two is to be expected ;) Don't believe me, if you drive a lot of highway try going 55 max and see how much your fuelly tank mpg changes on next fill up.

posted by smkuehn on June 24, 2014

this tip works for 78% of voting Fuelly members.

Tyre Pressures (Bike)

Don't know if this will apply to every bike, but on my little Suzuki Marauder 125 I just pumped up the tyres way beyond Haines manual recommendations (36(f) & 40(r) psi instead of 25-29) at the suggestion of a seasoned biker - it's a completely different bike! - handles brilliantly, actually leans into corners without giving me the willies, even in the wet! fuel economy has just increased, as well as acceleration and top speed. wish I'd done this a year ago!

posted by Ambergnat on June 22, 2014

this tip works for 80% of voting Fuelly members.

Coasting to save petrol or not

If you are going down hill dont coast by putting in neutral because the engine will have to use fuel to keep the engine ticking over but if you leave in gear the car momentum will keep the engine turning over and the and the fuel system will have cut off the fuel due to lack of demand ( foot off accelerator ) as it tries to lower the revs to tickover . . if you have live MPG trip just watch it go into the 100's of mpg ... Note this only applies to fuel injection systems

posted by jon1612 on June 21, 2014

this tip works for 95% of voting Fuelly members.

Smart Driving

You can measure a person's intelligence by how fast they speed up to a red light. Judging by how often I see this occur, I have to question most drivers. Look further down the road and watch the traffic lights. If there is a red light, slow down and coast up to the red, do not speed ahead like a shortsighted driver. And for the people on your azz? They will get a lesson in efficient, intelligent driving as their car is still rolling when the light turns to green, saving everyone gas mileage as well as unnecessary wear on vehicle breaks. In smaller cities this works amazingly well. In bigger cities some stop lights are quite long so this may not work AS well, but still, no one, and I mean NO ONE should be speeding up to a red light. Do not let foolish drivers behind you rush you up to a red light. Intelligence must own the day.

posted by Peakstar on June 20, 2014

this tip works for 97% of voting Fuelly members.

Price per gallon

I like to patronize stations that have lower prices, but a very simple spreadsheet with fuel cost and distance to the regular stations where you fill up will tell you if there is any savings to drive to a farther station to save money on the per gallon price.

posted by Q5TDI on June 16, 2014

this tip works for 30% of voting Fuelly members.

Clean your car often

Cleaning your car, especially your underside is important as it will slow down the corrosion of exposed metals and prevent costly repairs. Pay attention at the wheel wells, it's where most of the dirt is accumulated. Make sure to use distilled water or wipe it dry! A clean car may also reduce air drag.

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