Gas Savings Tips That Don't Actually Work

borgzman

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Full Article => gas-savings-tips-that-don't-actually-work: Personal Finance News from Yahoo! Finance

1. Turning Off the AC
Air conditioning in your home does a number on your electric bill, so it must drain your gas tank too, right? Not so much. Auto testing at Consumer Reports proves that running the AC uses such a nominal amount more in gas, you may as well turn on the AC and be comfortable on a hot day. Rolling down your windows can add drag, zapping your car's efficiency; for best gas mileage, run the fan and keep your windows rolled up
2. Filling Up When It's Cold Outside
Get your gas in the evening or early morning -- the fuel is cold, and therefore denser. The truth about this myth is that you can barely register a temperature difference, since gas is stored in cool underground tanks, so fill up when you want. There are no savings to be had by waiting until it's cool out.
3. Increasing Tire Pressure
To get the most out of your gallon of gas, you should pump up those tires, some say. While driving on underinflated tires can cost you 3.75% in fuel economy, overinflating tires can be downright dangerous, since it reduces your grip on the road and could cause an accident. Proper tire inflation is important for safety and longevity of your tires, but don't expect any significant gas savings there.
4. Pouring Additives
Where there's a need, there's a product, but that doesn't mean it actually works. Our desire for better fuel economy seems answered by fuel additives and even bolt-on devices -- but they're a complete waste of money according to the Environmental Protection Agency (EPA).
5. Changing the Air Filter
Taking care of your car is a good thing: You'll be able to drive it longer, and get the most for your money. Don't expect maintenance like changing the air filter to get you more miles out of the gas tank, though. Consumer Reports tests have shown that with today's computerized cars, clogged air filters don't actually reduce fuel economy. Take care of your car to make it last, but don't look at air filters to reduce your gas expense.
6. Keeping the Engine Running
Starting a car sucks up fuel, some say, so keep the engine idling when possible. That's bad advice: today's fuel-injected vehicles are efficient and don't waste gas during start-ups anymore. In fact, idling can cost you up to half a gallon of gas an hour, so turn off the engine if you're not going anywhere.

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There are a lot of myths out there when it comes to saving gas. So what does actually help improve your fuel economy? Instead of looking at your car to improve fuel economy, try changing the way you drive. Calm driving on the highway -- not zipping between lanes, tailgating or revving the engine so you quickly get up to speed -- can improve your fuel efficiency a whopping 33%. Remove any excess weight from your car to bump fuel economy another 2%, and drive sixty miles an hour (when the speed limit allows) on the highway for another 23% improvement in fuel efficiency. In the end, best fuel economy comes from a calm and safe driver, something that's a good thing regardless of the price we pay at the pump.
 
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I find weaving in traffic helps my mpg, means i dont have to slow down and wait for other cars which is effectivley wasting fuel. Most of the list is true though, but at one point screw fuel effienency i drive to have fun, not to save fuel, i drive the jetta tdi to conserve fuel, but that doesnt mean i dont drive it like a race car ;)
 
I love my 4runner so i consider gas money an entertainment expense.

X2!

i dont care if gas is $5 per gallon, i would still drive the 4runner. theres nothing better in the world than taking a drive with the windows down, music on, and knowing that you have one of the best vehicles made. aaah...


i need to change my pants...:D
 
X2!

i dont care if gas is $5 per gallon, i would still drive the 4runner. theres nothing better in the world than taking a drive with the windows down, music on, and knowing that you have one of the best vehicles made. aaah...


i need to change my pants...:D

Eww sick...haha!
 
5. Changing the Air Filter

Bull!

Everything your car does uses power which equates to fuel consumption. Have a nice new air filter and it burns less gas just to pull air in. It's not a fuel mixture issue, it's power used to do the work of bringing in a certain number of O2 molecules to burn a certain amount of fuel per second. Most people may not notice the difference, but it's still there.

[EDIT]
Careful reading of the others shows shows additional BS.
(1) It admits that running the A/C uses gas.
(3) It admits that over inflating will save gas, just that it's not safe. I agree, it's not safe and shouldn't be done, but it does save gas.
(4) If you have dirty fuel injectors you'll get less MPG. Adding injector cleaner or buying detergent gas (already added for you) will clean them which will give better MPG.
[/EDIT]
 
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I've found that tire pressure makes a pretty big difference.


Yes,it actually does but some people over inflate which leads to uneven wear and can be dangerous. I've seen people run 50psi just to get better MPGs but costing them tire life and 50psi makes the tires have less grip also.

I run my Duratracs at 36psi and have had solid even wear but anything much over that on my truck will cause the tires to wear in the middle. It's all about finding a good balance and it's different with all tires and vehicles.
 
Yes,it actually does but some people over inflate which leads to uneven wear and can be dangerous. I've seen people run 50psi just to get better MPGs but costing them tire life and 50psi makes the tires have less grip also.

I run my Duratracs at 36psi and have had solid even wear but anything much over that on my truck will cause the tires to wear in the middle. It's all about finding a good balance and it's different with all tires and vehicles.

Agreed. There's definitely a range you want to be in.

I've kind of had a hard time telling how my DuraTracs are wearing. It's difficult to compare tread across the tire because of the large gaps.

It doesn't help that I only put around 7,000 miles on them a year. Takes longer to see a pattern.
 
If you are only putting 7k on your truck a year then tire wear will be the least of your worries and by the time your Duratracs wear out you'll be in the age range tires should be replaced anyway which IMO (and manufactirer recomendations) is 7-8 years. You should see at least 6 years from that set.
 
Bull!

Everything your car does uses power which equates to fuel consumption. Have a nice new air filter and it burns less gas just to pull air in. It's not a fuel mixture issue, it's power used to do the work of bringing in a certain number of O2 molecules to burn a certain amount of fuel per second. Most people may not notice the difference, but it's still there.[/EDIT]


I agree. The engine is a pump, it sucks in air and pushes out exhaust. The harder it has to work to suck in air the less efficient it will be. This will lead to a greater gas consumption.
 
6 years is the legal limit.

Legal limit for what? You can legally drive on tires that are more than 6 years old. I think might might be illegal (did they pass the legislation yet?) to sell a tire that was manufactured more than six years ago. There were some good news stories on people buying new tires that were around six years old and the tires started to dry rot within a year or so....
 
i purchased my runner in 08, i got a flat in feb. of 11, my tires were still in good tread, but they were apparently 6 years old and started cracking from the inside. i was under the impression the dealer had put new ones on before i had purchased them, but no, he put the used ones that had been sitting on the lot for 3 years in the az heat. lesson learned.
 



I agree. The engine is a pump, it sucks in air and pushes out exhaust. The harder it has to work to suck in air the less efficient it will be. This will lead to a greater gas consumption.

A couple of thing to consider:

1- Under most conditions, the surface area of an engine's air filter is much more than adequate to supply all the air an engine could possibly need. If you have a very dirty (and therefore partially clogged or restricted) air filter and you bring the engine near redline at wide open throttle, then yes, efficiency will definitely drop. But in most situations, a dirty air filter will do nothing to make the engine work harder or use more fuel.

2- There was a really good peer-reviewed study about this a while back. With today's modern fuel injection systems, air flow is highly monitored and the fuel trim is almost infinitely monitored/measured to keep the engine at or near stoichiometric ratio of 14.7:1. So whether a filter is dirty or clean, the computer always tries to keep the ratio constant. If the filter is really dirty and just won't let enough air pass through, the fuel pulse drops as well. So in reality, a really dirty filter will actually INCREASE fuel economy. Of course the downside is the fact that the engine will be lacking in power.
 
i purchased my runner in 08, i got a flat in feb. of 11, my tires were still in good tread, but they were apparently 6 years old and started cracking from the inside. i was under the impression the dealer had put new ones on before i had purchased them, but no, he put the used ones that had been sitting on the lot for 3 years in the az heat. lesson learned.

That's messed up.

My old Michelin LTX's were like 7-9 years old and still had good tread left.They would have been fine to keep driving on, in my opinion, but I wanted something more aggressive.
 
A couple of thing to consider:

1- Under most conditions, the surface area of an engine's air filter is much more than adequate to supply all the air an engine could possibly need. If you have a very dirty (and therefore partially clogged or restricted) air filter and you bring the engine near redline at wide open throttle, then yes, efficiency will definitely drop. But in most situations, a dirty air filter will do nothing to make the engine work harder or use more fuel.

2- There was a really good peer-reviewed study about this a while back. With today's modern fuel injection systems, air flow is highly monitored and the fuel trim is almost infinitely monitored/measured to keep the engine at or near stoichiometric ratio of 14.7:1. So whether a filter is dirty or clean, the computer always tries to keep the ratio constant. If the filter is really dirty and just won't let enough air pass through, the fuel pulse drops as well. So in reality, a really dirty filter will actually INCREASE fuel economy. Of course the downside is the fact that the engine will be lacking in power.

Maybe if you keep the throttle in the same position. You will probably use more throttle to get back the power. I would think the engine would work harder and be more wasteful.
 
I find weaving in traffic helps my mpg, means i dont have to slow down and wait for other cars which is effectivley wasting fuel. Most of the list is true though, but at one point screw fuel effienency i drive to have fun, not to save fuel, i drive the jetta tdi to conserve fuel, but that doesnt mean i dont drive it like a race car ;)

:iagree: I have to get around the slow pokes. Time is money.
 
Full Article => gas-savings-tips-that-don't-actually-work: Personal Finance News from Yahoo! Finance

1. Turning Off the AC
Air conditioning in your home does a number on your electric bill, so it must drain your gas tank too, right? Not so much. Auto testing at Consumer Reports proves that running the AC uses such a nominal amount more in gas, you may as well turn on the AC and be comfortable on a hot day. Rolling down your windows can add drag, zapping your car's efficiency; for best gas mileage, run the fan and keep your windows rolled up

I've seen testing where they found you get better fuel economy with the AC off, windows down under 80km/h, but going faster than that you are better off with the windows up and AC on.

And tire inflation is definitely something that makes a difference.
 

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