MPG

[MPG101]

I'm new to this forum.....2011 Edge AWD owner

 

Ok gas prices are starting to level off but I still want to increase MPG. Any ideas?

 

I'm following the basics....keeping tire pressure up, close windows so I do not create drag and operate the AC only when really needed. With all that in mind I still only get 19.8 MPG. So I was thinking of a turbo but I really don't want to go with after market kit since I have not heard anything good with these kits. I also heard of cool air intake but again no substantial increase in MPG. I have not tried high octane yet to see if that makes a difference. How about something as simple as a bug deflector to keep air flowing?

 

Something that gets my curiosity is the region we live in and MPG. For instance, if you live in Alaska where there is colder air opposed to Florida where it is usually humid.....do you get better MPG in Alaska? If memory serves me right cooler air will increase MPG.

 

Since we are all Ford Edge owners I figured this would be a great start to see what everyone else is doing to increase MPG.

[choff1138]

I live in Alaska and get about 20 - 21 MPG mixed. But on a good road trip I can get 26...

[cal3thousand]

I'm new to this forum.....2011 Edge AWD owner

 

Ok gas prices are starting to level off but I still want to increase MPG. Any ideas?

 

I'm following the basics....keeping tire pressure up, close windows so I do not create drag and operate the AC only when really needed. With all that in mind I still only get 19.8 MPG. So I was thinking of a turbo but I really don't want to go with after market kit since I have not heard anything good with these kits. I also heard of cool air intake but again no substantial increase in MPG. I have not tried high octane yet to see if that makes a difference. How about something as simple as a bug deflector to keep air flowing?

 

Something that gets my curiosity is the region we live in and MPG. For instance, if you live in Alaska where there is colder air opposed to Florida where it is usually humid.....do you get better MPG in Alaska? If memory serves me right cooler air will increase MPG.

 

Since we are all Ford Edge owners I figured this would be a great start to see what everyone else is doing to increase MPG.

 

 

 

I'm getting the same if not better driving MPG.

 

I state driving MPG, since I spend some time idling. This weekend for example, the kid was napping in the car and I wanted to wash it. So I had to run the engine and A/C while she slept for 30 minutes. A sure MPG killer if you figure that into your numbers.

 

 

As for your ideas to lower MPG, let me address them 1 at a time:

 

1) Turbo - turbos create more power, not MPG efficiency. Having said that, turbo cars are more efficient than their Normally Aspirated counterparts when engines of the same power level are concerned. That's how a Nissan GT-R can muster 500HP+ from a 3.5L V6 and a 6.2L BOSS engine puts out 400-500 HP depending on tune. Simply due to the size of the engine block, you can see where an advantage occurs. Adding a turbo to your 3.5L won't make it more efficient, it will give it more power.

 

2) Cold-Air Intake - Ford's design on this vehicle is already a cold air intake. It takes cold air from the outside of the vehicle. Kits that are available are generally "Short Ram" intakes that lessen the restrictions to flow in the system. It also won't increase MPG. Believe me, if it did, Ford would have used it in today's fight for MPG supremacy.

 

3) High Octane - This will give you some more distance and MPG but at the cost of money. 91 Octane (California) is slightly more energy dense than 87, but you pay the price at the pump.

 

4) Bug Deflector - I'm pretty sure that this will decrease your MPG as it causes disturbances in the flow of air around your vehicle. You'd have better luck taping the seams where 2 body panels meet to reduce air drag.

 

5) Regional MPG - Differences in fuel blends, air quality, air density, and ambient temperature will all have varying effects on MPG from region to region. Additionally, gasoline expands and contracts at 0.069% per degree Fahrenheit. So, in Alaska, where the fuel is colder and more energy dense by volume, you should have better MPG, albeit very little difference.

 

6) You are already doing the right things in regards to efficiency. Only thing I think you could change is driving habits. I don't know you personally, so I can't comment on your personal driving, but a keen eye in traffic can save you a bunch of mileage. Coasting to lights that you know you won't make on green, hustling a bit to lights that you know you can make it through will both help your MPG, but you have to be familiar with the street light timing in your area.

 

 

I, personally, like to keep an eye on my MPG. But I don't scrutinize every minute detail as it isn't all that important to me.

 

If I lose $1.50 at the pump, but I enjoyed my car more because of it, I feel fine. I could spend my time or effort trying to hyper mile constantly to save a few cents, but I could also save more (or make more money) putting my time in elsewhere. If MPG were really that important, I would be driving a Chevy Equinox instead. (But we all know those things are fugly)

 

 

 

 

 

 

 

 

[choff1138]

If MPG were really that important, I would be driving a Chevy Equinox instead. (But we all know those things are fugly)

 

 

side note - hehehehe - my mom just bought one of these and I just cringe (for many reasons) when I see it. They are just goofy looking. And the interior is typical chevy crap.

 

Other than that - Alaska would maybe get better mileage in the winter because of the cold, but they mess with our gas in the winter to make sure we don't.... Oh well. I gave up a small car for room, so I knew I was giving up MPG. I am happy to see how much it improves on long drives though.

[cal3thousand]

side note - hehehehe - my mom just bought one of these and I just cringe (for many reasons) when I see it. They are just goofy looking. And the interior is typical chevy crap.

 

Other than that - Alaska would maybe get better mileage in the winter because of the cold, but they mess with our gas in the winter to make sure we don't.... Oh well. I gave up a small car for room, so I knew I was giving up MPG. I am happy to see how much it improves on long drives though.

 

My mother-in-law has a GMC Terrain and I was quite impressed with the little 4 banger.

 

And although It looks a TON better than its Chevrolet cousin, I would never give up my V6 torque.

 

All this talk has me interested to see how the new EcoBoost does with its 2.0L mill

Edited May 31, 2011 by cal3thousand

[nextime]

#1. is all wrong. Turbos can effect MPG in a positive way if they were built for that intention.

 

Most Semi trucks have Turbos and they increase the HP and Mileage. Lots of the Diesel cars today are Turboed from the factory just for the MPG gain and performance..... Ever hear of the Ford Ecoboost engine? They say it will increase the MPG by 10% and it has a Turbo. You got Turboing and engine mixed up with all of the ricers out there. And yes with a turbo or a supercharger you should run a higher Octane because these do increase the compression in the cylinders.

http://gas2.org/2010/02/10/ford-brings-ecoboost-tech-to-2011-edge-suv-likely-to-get-30-mpg-highway/

 

#3. is all wrong. The Edge can not burn 91 Octane, it was designed for 87.

 

Unless you can magically increase the compression ratio in your engine the 91 Octane will just get pissed out your exhaust, may cause damage to your catalyst system and make your wallet higher. If you do notice an improvement with running a higher Octane gas it just means something is wrong, dirty, or fouled up in your engine or engine controls. Engines that have high compression or are designed for high Octane should be running it, an Edge is neither!

http://www.mpgenhance.com/highoctane.html

http://www.bargaineering.com/articles/high-octane-gas-myth.html

http://www.ftc.gov/bcp/edu/pubs/consumer/autos/aut12.shtm

[cal3thousand]

#1. is all wrong. Turbos can effect MPG in a positive way if they were built for that intention.

 

Most Semi trucks have Turbos and they increase the HP and Mileage. Lots of the Diesel cars today are Turboed from the factory just for the MPG gain and performance..... Ever hear of the Ford Ecoboost engine? They say it will increase the MPG by 10% and it has a Turbo. You got Turboing and engine mixed up with all of the ricers out there. And yes with a turbo or a supercharger you should run a higher Octane because these do increase the compression in the cylinders.

http://gas2.org/2010...30-mpg-highway/

 

#3. is all wrong. The Edge can not burn 91 Octane, it was designed for 87.

 

Unless you can magically increase the compression ratio in your engine the 91 Octane will just get pissed out your exhaust, may cause damage to your catalyst system and make your wallet higher. If you do notice an improvement with running a higher Octane gas it just means something is wrong, dirty, or fouled up in your engine or engine controls. Engines that have high compression or are designed for high Octane should be running it, an Edge is neither!

http://www.mpgenhanc...highoctane.html

http://www.bargainee...e-gas-myth.html

http://www.ftc.gov/b...utos/aut12.shtm

 

 

 

 

For #1... I said of engines with same power. Don't forget that part! Semi Trucks have turbos to increase power. In order to make a N/A semi truck meet the same power as that turbo one, the engine would have to be larger, which would reduce overall efficiency due to the weight of said unit (rotational inertia of engine components as well as increased block weight. You prove my point by saying EcoBoost. The Edge's EcoBoost is a 2.0L ... way lighter engine and more MPG. The EcoBoost 3.5L does not get the MPG that the Edge 3.5L does. Read the whole analogy in part one before saying its all wrong. I come from a world where Turbo's are King. http://www.volvospeed.com/vs_forum/

 

 

I will rephrase again for you: There is no turbo in the world that you can add to your Edge to increase MPG. DONE. End of story. (The OP asked about adding a turbo, not shrinking his engine to a 2.0L 4-cylinder and THEN adding a turbo)

 

 

For #3 with the use of oxygen sensors, tell me how will you "piss out 91 octane" and "damage a catalyst"?

 

If the system is running on closed loop (not WOT, we are talking about MPG not racing), an engine/ECU will work to increase AFR if it detects a rich condition by affecting the STFT and then LTFT, which will affect MPG. But, the 20 cents you pay extra will not get you 20 cents extra mileage in regards to higher octane.

 

If a car is running poorly and pinging (an extreme example) it will be very inefficient. On that particular car, running higher octane fuel will decrease pining and, in turn, increase MPG.

 

Don't get me wrong, I'm not running anything other than 87 in my Ford Edge and 91 in my Volvo 850 T5.

Edited May 31, 2011 by cal3thousand

[nextime]

For #3. tell me how it can increase MPG when you are not changing the compression ratio of the engine, explain how the engine can even burn the 91 Octane properly?

 

Oh and by trying to burn a fuel that is not designed to be burnt can damage the catalyst, read "Meltdown here" http://en.wikipedia.org/wiki/Catalytic_converter We all know a failed catalyst system can do engine damage.

 

Oh and yes they can increase MPG, this site is one of the leading Turbo kit MFG's and they claim a MPG increase.http://www.ststurbo.com/home Read the big picture. Here they claim most customers get a 1 to 3 MPG increase http://www.ststurbo.com/the_technology oh and yes that is stock Naturally Aspirated Engine to a now Turboed engine with a big gain in HP.

 

Here is more proof how a turbo can increase MPG. Yes the engine was originally a Diesel but the new kit should reduce MPG if it increased HP and Torque?

http://www.bankspower.com/products/show/155/39

 

Oh and why didnt Ford Turbo a 3.5? no room under the hood for a stock type system. All stock Turbos are mounted near the engine. With a STS could be done cause they leave the engine alone and the Turbo is in the rear because they have this type of Turbo system patented so the MFG's can not use it. Personally I do not think the stock Transmission could handle a big boost of HP.

 

Oh read here..... http://www.paxtonauto.com/article.php?id=152#q5 Paxton Superchargers say you may gain MPG. I know on my 92 Mustang I would gain MPG if I was on very long trips on the HWY. I only averaged a few MPG but driving on the HWY for long periods I would gain MPG but would kill it as soon as I stomped on the pedal.

[cal3thousand]

For #3. tell me how it can increase MPG when you are not changing the compression ratio of the engine, explain how the engine can even burn the 91 Octane properly?

 

Oh and by trying to burn a fuel that is not designed to be burnt can damage the catalyst, read "Meltdown here" http://en.wikipedia....lytic_converter We all know a failed catalyst system can do engine damage.

 

Oh and yes they can increase MPG, this site is one of the leading Turbo kit MFG's and they claim a MPG increase.http://www.ststurbo.com/home Read the big picture. Here they claim most customers get a 1 to 3 MPG increase http://www.ststurbo.com/the_technology oh and yes that is stock Naturally Aspirated Engine to a now Turboed engine with a big gain in HP.

 

Here is more proof how a turbo can increase MPG. Yes the engine was originally a Diesel but the new kit should reduce MPG if it increased HP and Torque?

http://www.bankspowe...cts/show/155/39

 

Oh and why didnt Ford Turbo a 3.5? no room under the hood for a stock type system. All stock Turbos are mounted near the engine. With a STS could be done cause they leave the engine alone and the Turbo is in the rear because they have this type of Turbo system patented so the MFG's can not use it. Personally I do not think the stock Transmission could handle a big boost of HP.

 

Oh read here..... http://www.paxtonaut...e.php?id=152#q5 Paxton Superchargers say you may gain MPG. I know on my 92 Mustang I would gain MPG if I was on very long trips on the HWY. I only averaged a few MPG but driving on the HWY for long periods I would gain MPG but would kill it as soon as I stomped on the pedal.

 

Your blanket statement about burning a fuel not meant for your car damaging your catalyst needs to be rethought.

 

From your wik-link: "Any condition that causes abnormally high levels of unburned hydrocarbons" ... does nothing to explain a closed looped system that uses MAF/MAP sensors and Oxygen sensors to meter fuel and rid the unburned hydrocarbons. (Do you know what a closed loop system is?)

 

"Burning a fuel that is not designed to be burnt can damage the catalyst" ....get real, we are talking about gasoline with an Octane rating of 4 pts difference here... not putting biodiesel in a gas car.

 

Hypothetical: Our cars weren't designed for Ethanol either, but what damage would ethanol do to your catalyst? NOTHING!!!... it would actually be better on the catalyst due to its lower EGTs produced and cleaner burn. AND adding Ethanol would increase your Octane rating as well. Still no catalyst damage. Only risk would be from alcohol (being hydrophilic) drying out the rubber in your fuel system. So your 'high octane leads to broken catalyst' idea is wrong. (note: I am not a proponent of Ethanol based fuels as corn is better food than fuel)

 

 

 

Back to the turbo thing. Try to bring an example of science and not just some other company claim that is intended to sell you something. Science is more believable than Marketing in my world.

 

Please oh Please tell me the science behind how forced induction will increase fuel efficiency of a particular engine block. Please go into AFRs and boost pressures so I can understand.

 

I didn't ask why Ford did not include the 3.5L EcoBoost in the Edge. I stated that the 3.5L EcoBoost is not as good on gas as the 3.5L N/A. It's sure better than a V8 that it is trying to replace. Let's not forget that these EcoBoost engines are direct injected on top of twin scroll turbos.

 

 

 

Edited May 31, 2011 by cal3thousand

[cal3thousand]

I just read your link to here: http://www.paxtonaut...e.php?id=152#q5

 

Complete GARBAGE from them:

 

Will the supercharger affect the gas mileage?

Fuel economy depends entirely on your driving habits and in some cases you may experience an increase in gas mileage. Under normal freeway driving, for example, the supercharger is not under boost but is increasing the efficiency of the engine by forcing air through restrictions like the air filter. But let's face it, you are not interested in a supercharger to enjoy "normal driving conditions." When you are demanding additional performance from your vehicle it will require additional fuel. If you are a "lead foot" your fuel economy will decline because your car is working harder. If you are simply using the supercharger for occasional acceleration and passing performance, then your fuel economy should remain about the same.

 

 

Not single shred of science in there. All BS claims. How would making your engine drive an air compressor at ALL TIMES (belt driven supercharger) also make it more efficient? "By forcing air through restrictions like your air filter" ... that is soooo laughable.

 

Edited May 31, 2011 by cal3thousand

[nextime]

Vortech is also a leader in the Supercharger world, they also claim.....

 

 

"What will a Vortech supercharger system do to my mileage?

 

When the supercharger system is installed as purchased, mileage often times improves due to the increased engine efficiency. If you tend to drive with a "heavy foot," your mileage may suffer." http://www.vortechsuperchargers.com/support.php?support_section=Frequently%20Asked%20Questions

 

3 leading companies in the market claim MPG gains, STS Turbo Systems, Paxton and Vortech Superchargers. I think people would believe them before you.

 

Here is Magnacharger, http://www.magnacharger.com/magnacharger-chevrolet-corvette-intercooled-supercharger-system.htm "• Computer programmer re-flashes factory ECU, spark and fuel calibration, transmission shift points, line pressure and torque converter strategies are optimized to manage increased torque, horsepower and mileage."

 

Now that is 4 of the top sellers of forced induction systems stating either no loss or MPG gains.

[cal3thousand]

Vortech is also a leader in the Supercharger world, they also claim.....

 

 

"What will a Vortech supercharger system do to my mileage?

 

When the supercharger system is installed as purchased, mileage often times improves due to the increased engine efficiency. If you tend to drive with a "heavy foot," your mileage may suffer." http://www.vortechsu...ked%20Questions

 

3 leading companies in the market claim MPG gains, STS Turbo Systems, Paxton and Vortech Superchargers. I think people would believe them before you.

 

Here is Magnacharger, http://www.magnachar...rger-system.htm "• Computer programmer re-flashes factory ECU, spark and fuel calibration, transmission shift points, line pressure and torque converter strategies are optimized to manage increased torque, horsepower and mileage."

 

Now that is 4 of the top sellers of forced induction systems stating either no loss or MPG gains.

 

I'll ask one more time... explain to me in scientific terms not marketing terms.... please.

Edited June 1, 2011 by cal3thousand

[akirby]

I'll ask one more time... explain to me in scientific terms not marketing terms.... please.

 

Seems nextime only understands marketing bullshit not scientific theory or testing methods.

 

 

How can a car that works on 87 octane take advantage of 91 octane? Simple - it advances the timing which the higher octane allows without knocking.

It's the same thing that a car designed for 91 octane does when using 87 except in reverse - it retards the timing in that case. You don't have to change the compression ratio - only the timing.

 

Cars that "recommend" premium will advance the timing for 91 or higher octane for better performance but will retard the timing to avoid damage if you run 87.

 

It is true that cars that are not designed to take advantage of premium won't benefit by running premium and can cause damage if used long term.

[Modranger]

How can a car that works on 87 octane take advantage of 91 octane? Simple - it advances the timing which the higher octane allows without knocking.

It's the same thing that a car designed for 91 octane does when using 87 except in reverse - it retards the timing in that case. You don't have to change the compression ratio - only the timing.

Cars that "recommend" premium will advance the timing for 91 or higher octane for better performance but will retard the timing to avoid damage if you run 87.

 

I'm new here but work with me on this... it stands to reason then that a flex fuel engine capable of using E85 'cornygas' is therefore a bigger retard? Having parted with a perfectly good '08 Flex Fuel capable 12 MPG Armada for a 40 MPG Lincoln MKZ Hybrid and a 17 best Premium only '07 MDX for a so far (7K) 23 MPG Edge Limited, I can appreciate the retard aspect.

 

Keep those smiles & miles coming.

[nextime]

An E85 Car uses bigger injectors and a higher volume fuel pump to compensate for the difference.

http://www.automotivehelper.com/topic652916.htm

http://www.hptuners.com/forum/showthread.php?t=27655

 

 

And like akirby said and what I have said" It is true that cars that are not designed to take advantage of premium won't benefit by running premium and can cause damage if used long term. "

 

Akirby can you explain to cal3thousand since they dont believe me why using premium on a non premium engine can cause damage? I dont meant to put you in the spot but you must clearly know why and can explain it better than I can.

[akirby]

Actually I can't find any studies to back that up but it's a general caution in most owner's manuals (Fords at least) so I'm just going by what Ford says. It's probably just a CYA and won't actually cause any damage but at the very least it's a total waste of money and not a good idea - if the car is not designed to take advantage of premium.

[nextime]

Some of my stuff I cant back up either cause I can not find it. I go by what I read in the past (magazines or internet) or have been told by my many Ford Mechanic friends. Funny how if one person states something they are questioned to hell and back while others dont get questioned. This is why I asked you to post the answer. See how you cant find the answer either but nobody with tell you that you are full of BS and you need to prove it but you know the answer is true?

 

That is the problem with this forum, even if you can back up the claims you can still be full of BS because people believe what they want to.

 

 

Actually I can't find any studies to back that up but it's a general caution in most owner's manuals (Fords at least) so I'm just going by what Ford says. It's probably just a CYA and won't actually cause any damage but at the very least it's a total waste of money and not a good idea - if the car is not designed to take advantage of premium.

[cal3thousand]

Actually I can't find any studies to back that up but it's a general caution in most owner's manuals (Fords at least) so I'm just going by what Ford says. It's probably just a CYA and won't actually cause any damage but at the very least it's a total waste of money and not a good idea - if the car is not designed to take advantage of premium.

 

Agreed.

 

I initially recommended that the OP "would have to pay the price at the pump".... maybe I should have rephrased it to: "You will not gain the full benefit of the extra cost as an appreciable MPG gain and some will tell you it may hurt your engine somehow"

 

That's what I get for answering the OP's questions...

[cal3thousand]

Some of my stuff I cant back up either cause I can not find it. I go by what I read in the past (magazines or internet) or have been told by my many Ford Mechanic friends. Funny how if one person states something they are questioned to hell and back while others dont get questioned. This is why I asked you to post the answer. See how you cant find the answer either but nobody with tell you that you are full of BS and you need to prove it but you know the answer is true?

 

That is the problem with this forum, even if you can back up the claims you can still be full of BS because people believe what they want to.

 

 

"...SOME people believe what they want to"

 

other's believe in Science and observation.

 

 

[akirby]

Some of my stuff I cant back up either cause I can not find it. I go by what I read in the past (magazines or internet) or have been told by my many Ford Mechanic friends. Funny how if one person states something they are questioned to hell and back while others dont get questioned. This is why I asked you to post the answer. See how you cant find the answer either but nobody with tell you that you are full of BS and you need to prove it but you know the answer is true?

 

That is the problem with this forum, even if you can back up the claims you can still be full of BS because people believe what they want to.

 

Ah, but what I said is backed up by the Ford owner's manual and Ford is not using that info for marketing purposes.

 

Your MPG claims are based on very vague statements made by companies trying to sell you a product and your own totally anecdotal and limited experience. There are no published tests under controlled conditions to back up those claims and no scientific theory to support it. Turbos make more power because they force in more air and more air requires more fuel. Period.

[nextime]

Yeah but you stated "Actually I can't find any studies to back that up but it's a general caution in most owner's manuals (Fords at least) so I'm just going by what Ford says" and now cal3thousand changes his whole tone. I stated that damage could be done in other posts but went ignored till you posted this.

 

I actually read my 2011 manual and it says warranty may be voided and powertrain damage may occur if the wrong fuel is used. cal3thousand said it was OK to do use 91 and it will give you more MPG even though Ford is against it, no proof shown from cal3thousand on their claim on more MPG for 91 octane, I at least showed all the proof with links even if it wasnt believed.

 

Like I said people are quick to jump on people opinions here. Could be why lack of posts and a low member list.

 

This is one of the forums that I come to where people are quick to slam any opinion unless it is yours akirby, like they are in fear or something. Corvetteforum.com is one of the best out there and they do not slam people as fast as it is done here by members that is why they are so big. Other Ford forums are even bigger and no post slamming is done there.

 

OK cal3thousand show us your proof that more MPG will be gained if 91 octane is used?

[cal3thousand]

Yeah but you stated "Actually I can't find any studies to back that up but it's a general caution in most owner's manuals (Fords at least) so I'm just going by what Ford says" and now cal3thousand changes his whole tone. I stated that damage could be done in other posts but went ignored till you posted this.

 

I actually read my 2011 manual and it says warranty may be voided and powertrain damage may occur if the wrong fuel is used. cal3thousand said it was OK to do use 91 and it will give you more MPG even though Ford is against it, no proof shown from cal3thousand on their claim on more MPG for 91 octane, I at least showed all the proof with links even if it wasnt believed.

 

Like I said people are quick to jump on people opinions here. Could be why lack of posts and a low member list.

 

This is one of the forums that I come to where people are quick to slam any opinion unless it is yours akirby, like they are in fear or something. Corvetteforum.com is one of the best out there and they do not slam people as fast as it is done here by members that is why they are so big. Other Ford forums are even bigger and no post slamming is done there.

 

OK cal3thousand show us your proof that more MPG will be gained if 91 octane is used?

 

My tone has not changed. Read again. YOU changed your tune when akirby stepped in. My tone towards akirby is different than towards you due to respect that he actually knows what he's talking about.

 

 

I answered the OP's questions and you tried to put your 2 cents in and tell me "its all wrong" - quote, unquote.

 

Additionally, akirby and I have tried to use understanding of closed-loop EFI systems to explain things to you, but you insist on linking to some vendors' claim sheet to "prove" yourself and defend your reasons of bashing my reply to the OP.

 

Akirby already explained to you that putting 91 in your car will allow it to advance timing or use less retard. Under normal driving, 87 is best suited for this engine (no one is arguing that). But under conditions of a hot climate and a hot engine, for example, 91 would help reduce the chances of pre-ignition and/or detonation. This would allow the engine to advance timing and use more of the peak pressure.

 

Ford is stating warranty "may be void... if the wrong fuel is used...." . Which mostly applies to fools putting racing gas (104 Octane) in their car. You honestly think Ford can void your warranty for using 91 pump gas? One more time: get real!

 

 

Magnuson-Moss states that they would have to be able to prove that it directly caused the engine component failure. There's numerous people that throw away their money on Premium fuel and not damaged their engines. I have YET to hear of an engine component named - and properly explained - in this thread or elsewhere that would be in jeopardy for using 91.

 

Since you like links so much, here's one for you:

 

http://en.wikipedia....i/Octane_rating

 

Please read the whole section that includes this excerpt: ...Retarding the ignition timing reduces the tendency of the fuel-air mixture to detonate, but also reduces power output and fuel efficiency..

 

also, find me the section that says damage to an engine or component may occur - or any other viable non-vendor source you can Google up.

 

EDIT: spelling and clarification

Edited June 1, 2011 by cal3thousand

[akirby]

Yeah but you stated "Actually I can't find any studies to back that up but it's a general caution in most owner's manuals (Fords at least) so I'm just going by what Ford says" and now cal3thousand changes his whole tone. I stated that damage could be done in other posts but went ignored till you posted this.

 

I actually read my 2011 manual and it says warranty may be voided and powertrain damage may occur if the wrong fuel is used. cal3thousand said it was OK to do use 91 and it will give you more MPG even though Ford is against it, no proof shown from cal3thousand on their claim on more MPG for 91 octane, I at least showed all the proof with links even if it wasnt believed.

 

Like I said people are quick to jump on people opinions here. Could be why lack of posts and a low member list.

 

This is one of the forums that I come to where people are quick to slam any opinion unless it is yours akirby, like they are in fear or something. Corvetteforum.com is one of the best out there and they do not slam people as fast as it is done here by members that is why they are so big. Other Ford forums are even bigger and no post slamming is done there.

 

OK cal3thousand show us your proof that more MPG will be gained if 91 octane is used?

 

We only slam opinions when they are presented as facts and are factually inaccurate.

 

I like blue cars is an opinion. Turbos yield better MPG is an inaccurate statement of fact.

 

I will say that you appear to be correct that the Edge was not designed to use premium fuel and probably would not yield any performance or mpg gains with 91 octane (according to the OM) but there's no way to know for sure without a controlled test or other evidence from Ford engineers.

 

It is true that I have a serious pet peeve about mis-information or putting blame where it doesn't belong so I feel obligated to speak up when I see that. It's unfortunate that most of what you post falls into that category.

If all those other forums don't care about accurate information then that's their problem.

 

Perhaps you should think twice before making unsubstantiated claims that end up getting shot down. Do a little more research and stop relying on marketing hype from companies trying to sell products.

[akirby]

Akirby already explained to you that putting 91 in your car will allow it to advance timing or use less retard. Under normal driving, 87 is best suited for this engine (no one is arguing that). But under conditions of a hot climate and a hot engine, for example, 91 would help reduce the chances of pre-ignition and/or detonation. This would allow the engine to advance timing and use more of the peak pressure.

 

Actually I said IF the engine was designed to use 91 and it doesn't appear that the Edge engine is designed to do that, at least not according to the OM. Although it is possible the programming is in the PCM to do it and it's just not advertised.

 

 

I think everyone has made their point so let's stick to the OP's question or drop it altogether.

[cal3thousand]

Actually I said IF the engine was designed to use 91 and it doesn't appear that the Edge engine is designed to do that, at least not according to the OM. Although it is possible the programming is in the PCM to do it and it's just not advertised.

 

 

I think everyone has made their point so let's stick to the OP's question or drop it altogether.

 

Thanks for clarifying.

 

I have said my part to the OP. Hopefully others will respond to him in like fashion.