Six gas mileage myths

jznsn2u

Active Member
I copied this from yahoo ->


Do Americans care about fuel economy as oil spills into the Gulf of Mexico and gasoline hovers around $3 a gallon? You bet they do, though they also have a fair number of misconceptions about how to squeeze a few more miles out of every drop.

The Consumer Federation of America's (CFA) most recent survey says that if we had a 50-mile-per-gallon car fleet today, we'd save more oil than the entire proven reserves in the entire Gulf of Mexico. And people care about that.



According to Jack Gillis, author of The Car Book and a CFA spokesman, 87 percent of respondents said it is "important that the country reduce its consumption of oil," and 54 percent said it is "very important."

An amazing 65 percent of Americans surveyed support a mandated transition to a 50-mpg fuel economy standard by 2025. That's a tough standard, some 15 mpg better than the ambitious goal set by the Obama Administration (35 mpg by 2016).

"The expectations of American consumers are reasonable and achievable," Gillis said in a conference call." CFA says that Asian carmakers, compared to the U.S. competition, are offering twice as many vehicles with 30 mpg or better. "It's shocking that so few of today's cars get more than 30 mpg," he said.

Mark Cooper, CFA's research director, noted that in five years of the group's polling, the public's views have stayed remarkably consistent: Americans want less dependence on Middle Eastern oil and higher fuel-economy standards.

People care about fuel economy, but they're misinformed about how to actually achieve it. The federal government's fueleconomy.gov site (very useful to check cars' mpg) just published the "Top 10 Misconceptions About Fuel Economy."

Here are a few big myths:

*1 It takes more fuel to start a vehicle than it does to let it idle.

People are really confused about this one and will leave a car idling for half an hour rather than turn it off and restart. Some kids I know started an anti-idling campaign in the suburbs and are shaming parents into shutting down their cars.

Idling uses a quarter- to a half-gallon of fuel in an hour (costing you one to two cents a minute). Unless you're stalled in traffic, turn off the car when stopped for more a few minutes.

*2 Vehicles need to be warmed up before they're driven.
Pshaw. That is a long-outdated notion. Today's cars are fine being driven off seconds after they're started.

*3 As a vehicle ages, its fuel economy decreases significantly.
Not true. As long as it's maintained, a 10- or 15-year-old car should have like-new mileage. The key thing is maintenance -- an out-of-tune car will definitely start to decline mileage-wise.

*4 Replacing your air filter helps your car run efficiently.
Another outdated claim, going back to the pre-1976 carburetor days. Modern fuel-injection engines don't get economy benefits from a clean air filter.

*5 After-market additives and devices can dramatically improve your fuel economy.
As readers of my story on The Blade recall, there's not much evidence that these "miracle products" do much more than drain your wallet. Both the Federal Trade Commission and Consumer Reports have weighed in on this. There are no top-secret 100-mpg add-ons out there.

*6 Using premium fuel improves fuel economy.
You might as well write a check to BP if you believe this. Only use premium if your car specifies it.

Here's the complete list of myths.CLICK
 

DC_Five_Earl

New Member
I copied this from yahoo ->


Do Americans care about fuel economy as oil spills into the Gulf of Mexico and gasoline hovers around $3 a gallon? You bet they do, though they also have a fair number of misconceptions about how to squeeze a few more miles out of every drop.

The Consumer Federation of America's (CFA) most recent survey says that if we had a 50-mile-per-gallon car fleet today, we'd save more oil than the entire proven reserves in the entire Gulf of Mexico. And people care about that.



According to Jack Gillis, author of The Car Book and a CFA spokesman, 87 percent of respondents said it is "important that the country reduce its consumption of oil," and 54 percent said it is "very important."

An amazing 65 percent of Americans surveyed support a mandated transition to a 50-mpg fuel economy standard by 2025. That's a tough standard, some 15 mpg better than the ambitious goal set by the Obama Administration (35 mpg by 2016).

"The expectations of American consumers are reasonable and achievable," Gillis said in a conference call." CFA says that Asian carmakers, compared to the U.S. competition, are offering twice as many vehicles with 30 mpg or better. "It's shocking that so few of today's cars get more than 30 mpg," he said.

Mark Cooper, CFA's research director, noted that in five years of the group's polling, the public's views have stayed remarkably consistent: Americans want less dependence on Middle Eastern oil and higher fuel-economy standards.

People care about fuel economy, but they're misinformed about how to actually achieve it. The federal government's fueleconomy.gov site (very useful to check cars' mpg) just published the "Top 10 Misconceptions About Fuel Economy."

Here are a few big myths:

*1 It takes more fuel to start a vehicle than it does to let it idle.

People are really confused about this one and will leave a car idling for half an hour rather than turn it off and restart. Some kids I know started an anti-idling campaign in the suburbs and are shaming parents into shutting down their cars.

Idling uses a quarter- to a half-gallon of fuel in an hour (costing you one to two cents a minute). Unless you're stalled in traffic, turn off the car when stopped for more a few minutes.

*2 Vehicles need to be warmed up before they're driven.
Pshaw. That is a long-outdated notion. Today's cars are fine being driven off seconds after they're started.

*3 As a vehicle ages, its fuel economy decreases significantly.
Not true. As long as it's maintained, a 10- or 15-year-old car should have like-new mileage. The key thing is maintenance -- an out-of-tune car will definitely start to decline mileage-wise.

*4 Replacing your air filter helps your car run efficiently.
Another outdated claim, going back to the pre-1976 carburetor days. Modern fuel-injection engines don't get economy benefits from a clean air filter.

*5 After-market additives and devices can dramatically improve your fuel economy.
As readers of my story on The Blade recall, there's not much evidence that these "miracle products" do much more than drain your wallet. Both the Federal Trade Commission and Consumer Reports have weighed in on this. There are no top-secret 100-mpg add-ons out there.

*6 Using premium fuel improves fuel economy.
You might as well write a check to BP if you believe this. Only use premium if your car specifies it.

Here's the complete list of myths.CLICK
LOL at idling myth !!

But i still warm up my car:thumbs up
 

overheadJake

Weight is the enemy
I do not like #2, yeah it might be ok if the temp is perfect but I have read a few different places that a car needs about 30 seconds to get the oil going. Also if it is cold then driving seconds after you start your car is not good.
 

JCNOOGEN

New Member
i alway warm up my car.. and howeevr my integra temp needle will stay at near the mark c or exactly mark c... for like half an hour then it went up..
 

jdmjim

nothing from nowhere
so many people think preimum fuel makes the car get better fuel milage,so not true
 

OGstackadoIIa

TEAM LlGHTSPEED RACING
Idk, I always warm up my car at least until it reaches about equal with the top of the C, around two or three minutes. I do love the torque my car produces in the cold; seems like a whole different beast.
And I always use premium unleaded, and only Chevron and 76; Shell, only if I have to. I worry about everything; better safe than sorry in most cases
 

JGvtec

New Member
Its always just a known thing for me to warm my car up. I don't want to just start my car then get on it then see something break. A good thing to have is one of those heated plates that you stick on your oil pan. I just recently threw one on there during the winter.

Nice article Jayson! :thumbs up
 

Kiakid

Idk what to put here...
so many people think preimum fuel makes the car get better fuel milage,so not true
Actually, premium is all i run for a couple reasons. one i do in fact get about 50+ miles per tank on premium. it costs on average $3/gallon for premium here thats $.20 more than regular, so with a fill up im looking at $2.60 extra on my gas bill at fill up. 50 miles for $2.60 is better than 50 miles for round-about $4.50 for another gallon and a half or so. And yes i calculate my milage with every fill-up. And yes i do fill up with regular probably once a month to make sure im not out of my mind...

2nd of all, it is so much healthier for your engine. it keeps it clean and running efficiently. ie: Me and my old neighbor both had '92 corollas, both of us blew a head gasket. the only difference in our cars was i ran premium and he ran regular, we pulled the heads off of both and mine looked brand new in the cylinders and his was black as can be. well he started running premium and we both blew head gaskets again, we changed them again, mine looked the same and his magically within a month looked just as new as mine.

just my $.02
 

dc2GS-R

Super Moderator
Actually, premium is all i run for a couple reasons. one i do in fact get about 50+ miles per tank on premium. it costs on average $3/gallon for premium here thats $.20 more than regular, so with a fill up im looking at $2.60 extra on my gas bill at fill up. 50 miles for $2.60 is better than 50 miles for round-about $4.50 for another gallon and a half or so. And yes i calculate my milage with every fill-up. And yes i do fill up with regular probably once a month to make sure im not out of my mind...

2nd of all, it is so much healthier for your engine. it keeps it clean and running efficiently. ie: Me and my old neighbor both had '92 corollas, both of us blew a head gasket. the only difference in our cars was i ran premium and he ran regular, we pulled the heads off of both and mine looked brand new in the cylinders and his was black as can be. well he started running premium and we both blew head gaskets again, we changed them again, mine looked the same and his magically within a month looked just as new as mine.

just my $.02
That is simply just not true. Octane is the measure of resistance to detonation, and that is it. Octane has zero effect on efficiency and is absolutely no indiction of a cleaner burning fuel. Premium gasoline does one thing different than regular, resists detonation better. That is it. Gas mileage is easily effected by dozens of other factors, and 50 miles is easily skewed by driving habits, conditions, routes, etc. Secondly, running 87 octane in a 92 Corolla will not be the cause of a blown headgasket, the car obviously had other issue. Black cylinders do not necessary point to low grade fuel either. The car could be burning oil, timing could be off, many other things that would have much more to do with blackening the chambers and blowing headgaskets.

All you have done is convince yourself to waste money by putting premium fuel into a internally stock LS loosely based on irrelevant facts. If your car doesn't have issues with detonation, it will not benefit from higher octane, the measure of octane has absolutely zero to do with any of the other factors.
 

Kiakid

Idk what to put here...
That is simply just not true. Octane is the measure of resistance to detonation, and that is it. Octane has zero effect on efficiency and is absolutely no indiction of a cleaner burning fuel. Premium gasoline does one thing different than regular, resists detonation better. That is it. Gas mileage is easily effected by dozens of other factors, and 50 miles is easily skewed by driving habits, conditions, routes, etc. Secondly, running 87 octane in a 92 Corolla will not be the cause of a blown headgasket, the car obviously had other issue. Black cylinders do not necessary point to low grade fuel either. The car could be burning oil, timing could be off, many other things that would have much more to do with blackening the chambers and blowing headgaskets.

All you have done is convince yourself to waste money by putting premium fuel into a internally stock LS loosely based on irrelevant facts. If your car doesn't have issues with detonation, it will not benefit from higher octane, the measure of octane has absolutely zero to do with any of the other factors.

Read it again. Never did i say i blew a head gasket by using 87 pump. In fact if you pay attention to what i said, i stated that my neighbor ran 87 and i ran 93, we both blew a headgasket, the cause of this was never determined and i also never specified a cause for the BHG. But anyways pay real close attention, if i said ive always used 93 and i blew a head gasket, how could i have for one blown a head gasket by running 87 if i never use 87 and for 2 thinking 87 will blow a head gasket is retarded.

Now i will say this, now that you have displayed your obvious lack of reading comprehension i will add that i will still and keep going on what i have seen first hand. Now i will agree that driving habits and blah blah blah matter, but when you drive the same way to work day in and day out (working 2.5mi from home) it's kind of hard to factor that in. i kept my oil changed every 2k miles and (i know not anywhere near necessary) but just for the shits and giggles, changed my spark plugs and cleaned my cap and rotor with every oil change.

And the best part, was this corolla was also only used for work so thats pretty much the only drive time it had and it still displayed better gas mileage on 93 vs. 87. And the part about the pistons and cylinders going from black to new was the proof i gathered that the 93 will in fact keep your engine clean and running efficiently.

Now to my main point, If you dont want to believe it, and you have proven so with your comeback of "powerful knowledge", Then don't. Your opinion means shit to me. If you dont want to "waste" the money then don't, I do, because i just have it like that i guess, I think we can all quit acting like an extra $3 a week is killing our budgets. i waste more than $3 every day throwing change on the ground because i dont want to carry it.

Now, after that is said, you dont have to respond in such a hostile manner because you think someone is doing something stupid. Be nice, The world depends on it. :)
 

dc2GS-R

Super Moderator
I don't believe it because it is 100% incorrect. If you knew what the differences between regular and premium fuel, and what the octane number actually means, you would realize this as well. But apparently you have convinced yourself otherwise.

If you think I'm concerned about $3 a week on a budget, you've mistaken me for someone else. I am offering this up because I actually do have a little bit of knowledge, believe it or not, and am pretty well versed in these particular scenarios. But feel free to accept theory instead of fact.

I'm just letting you know the facts. As a Senior oilfield Engineer with a Masters in Mechanical Engineering, a Bachelors in Physic and minor in Mathematics, I can guarantee you the operation of the particular scenario you are implying, are not as they seem. Whether you chose to believe it or not is up to you, but I have no desire to argue about it. I know how it works from the inside out, literally. I apologize for offering true information from the experience of the people who deliver you this product.
 
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