delgadobb

Rookie Author
Nevada
Posts:14 Points:2,270 Joined:Apr 2012
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Message Posted: May 4, 2013 10:32:01 PM
Absolutely false. Octane has nothing to do with the quality of the gas - it has to do with how easily it burns. Lower octane = burns more easily. Higher compression & performance engines don't want the gas to burn prematurely so they require higher octane gas to delay the explosion created by high compression. Ever notice a lot of 85 octane gas when you're driving through high elevation areas? (i.e. Denver) There's less oxygen in the air so the gas needs to be a lower octane in order to be able to fire effectively. If the octane's too high when you're driving in the mountains, your car will really struggle to run. Focus on finding the highest quality gas with the best detergents at the octane that's appropriate for your car. THAT'S more important. If you use 91 octane gas in a vehicle designed for 87 octane gas you can eventually make your vehicle dependent on the higher octane & there's no reason to spend the extra 20 cents/gallon (or whatever the difference is at the time). Hope this helps.
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cujo1977

Sophomore Author
Nashville
Posts:180 Points:33,350 Joined:Apr 2013
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Message Posted: Apr 28, 2013 6:48:25 AM
none for me
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RNF

Champion Author
Indiana
Posts:7,203 Points:2,900,355 Joined:Jun 2004
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Message Posted: Apr 28, 2013 6:39:06 AM
False
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stoessner

Rookie Author
Cleveland
Posts:5 Points:200 Joined:Jul 2012
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Message Posted: Apr 25, 2013 9:54:53 AM
I've noticed no difference. If you have a car that needs higher octane fuel, you'll find it runs better.
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MBar351

Veteran Author
Raleigh
Posts:305 Points:692,100 Joined:Dec 2006
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Message Posted: Apr 24, 2013 9:29:38 PM
I've never been able to detect any significant difference.
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streetirsx

Veteran Author
North Dakota
Posts:474 Points:149,440 Joined:Nov 2012
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Message Posted: Apr 24, 2013 4:59:21 PM
False. Its better for your engine, but your MPG depends on several other factors not just the gas grade you buy.
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fan2love

Champion Author
Vancouver
Posts:17,725 Points:3,565,430 Joined:Sep 2002
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Message Posted: Apr 24, 2013 4:55:27 PM
Depends on your vehicle, as I'm sure this has been stated already.
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BartandLisa

Champion Author
Newfoundland
Posts:2,286 Points:447,995 Joined:Feb 2012
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Message Posted: Apr 24, 2013 2:11:46 PM
Premium will if the engine requires it and regular will decrease engine performance and mileage otherwise. However, premium burned needlessly will have no effect.
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BGSG_63

Rookie Author
Phoenix
Posts:44 Points:2,150 Joined:May 2009
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Message Posted: Apr 11, 2013 5:05:50 AM
Yes, and my records on long trips proves that higher octane ratings gives me/us better M.P.G. but then speed, weather and Flat terrain over hilly mountains plays a part in this too. Driving 55 MPH over 75 MPH gets better MPG too, but then again what do I know..... Smile
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giwan

All-Star Author
Michigan
Posts:630 Points:104,535 Joined:Aug 2009
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Message Posted: Apr 11, 2013 12:42:18 AM
Typically false but if your vehicle needs premium then a lower grade can lower your mpg
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sheba24

Champion Author
Long Island
Posts:2,450 Points:659,980 Joined:May 2011
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Message Posted: Apr 10, 2013 7:03:20 AM
false
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Maxer105

Champion Author
New Jersey
Posts:2,208 Points:309,090 Joined:Jun 2012
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Message Posted: Apr 10, 2013 6:49:16 AM
Don't know, never tried it.
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BeaON

Champion Author
Ontario
Posts:1,287 Points:82,390 Joined:Sep 2011
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Message Posted: Apr 10, 2013 6:40:12 AM
I don't now.
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nurdco

Champion Author
Colorado Springs
Posts:9,387 Points:1,723,085 Joined:Apr 2008
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Message Posted: Apr 10, 2013 6:14:12 AM
FAUX
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DanFMA

Champion Author
Massachusetts
Posts:1,257 Points:1,101,160 Joined:Apr 2008
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Message Posted: Apr 10, 2013 6:08:24 AM
False.
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MIT05

Champion Author
Massachusetts
Posts:4,307 Points:1,419,025 Joined:Aug 2008
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Message Posted: Apr 10, 2013 5:40:56 AM
A little bit, not much.
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twt

Champion Author
Virginia Beach
Posts:8,964 Points:1,023,935 Joined:Mar 2005
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Message Posted: Apr 10, 2013 4:01:25 AM
It's not worth the difference in price.
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petromonitor

Champion Author
Toronto
Posts:2,519 Points:546,380 Joined:Nov 2011
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Message Posted: Apr 9, 2013 11:28:50 PM
False
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bmxstud

Veteran Author
Chicago
Posts:284 Points:116,815 Joined:Jan 2013
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Message Posted: Apr 9, 2013 10:16:59 PM
depends
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PassmyGas

Veteran Author
North Carolina
Posts:381 Points:678,705 Joined:Jul 2010
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Message Posted: Apr 9, 2013 8:11:37 PM
When driving on the Autobahn, then it would make a difference. Here in the US, we usually don't get the high-performance difference out of the vehicle. The answer would be False
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streetirsx

Veteran Author
North Dakota
Posts:474 Points:149,440 Joined:Nov 2012
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Message Posted: Apr 9, 2013 5:55:58 PM
Yes and No.. theres too may variables when it comes to MPG. 87 vs 91, weather, terrain and style of driving. But purely putting 91 is not going to make much of a difference
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PhilnTX

All-Star Author
Dallas
Posts:665 Points:457,935 Joined:Sep 2011
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Message Posted: Apr 9, 2013 5:29:01 PM
In my 2010 Silverado, I get 2 MPG better when using 89, and 3 MPG better when using 91 VS 87 octane. This is calculated mileage, not instant mileage from the DIC. When I fill up with gas that has no ethanol, it is about .5MPG better yet. This is loaded and/or unloaded.
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dvx4002004

Sophomore Author
Medford
Posts:142 Points:280,495 Joined:Mar 2011
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Message Posted: Apr 9, 2013 1:41:39 PM
True
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Onlypremiumg

Rookie Author
Ontario
Posts:6 Points:2,945 Joined:Jan 2013
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Message Posted: Mar 14, 2013 10:07:26 AM
Almost 3 years studying, a couple thousand dollars later. 30 mpg in a full size gmc 1/2 ton with a v8 I say in your face ethanol and dodge! Emissions good! Environmental friendly! Cleaner burning! You couldn't pay me to run regular! They should only produce nitrogen enriched premium gas and that's it! Btw I'll never reveal my secret lol stupid computers!
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tpinilla

Rookie Author
Atlanta
Posts:39 Points:6,295 Joined:Jan 2012
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Message Posted: Feb 24, 2013 8:30:57 PM
F for most ofus
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GBMAX

Champion Author
Phoenix
Posts:4,806 Points:1,929,305 Joined:Feb 2005
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Message Posted: Feb 24, 2013 9:25:55 AM
Some cars.
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cogas1

All-Star Author
Colorado
Posts:534 Points:360,490 Joined:Mar 2012
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Message Posted: Feb 24, 2013 9:21:17 AM
False.
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5p33df73ak

Sophomore Author
Gary
Posts:235 Points:54,810 Joined:Dec 2012
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Message Posted: Feb 23, 2013 1:02:15 PM
Either way, I drive as best as I can drive. I really don't like spending a lot on gas either way but when gas prices are higher, I tend to want to car pool a lot. To me car pooling saves a lot on gas and when people give you gas money, they can give you less, saving them money because the more people that you car people the less money people have to give you for gas and it will still come out to be the total of what you need to pay.
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petromonitor

Champion Author
Toronto
Posts:2,519 Points:546,380 Joined:Nov 2011
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Message Posted: Feb 23, 2013 1:01:48 PM
False
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ace12012

Champion Author
Phoenix
Posts:1,805 Points:350,060 Joined:Apr 2012
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Message Posted: Feb 23, 2013 12:20:14 PM
depends on the engine.
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gas_phil

Champion Author
Sacramento
Posts:2,007 Points:154,440 Joined:Aug 2012
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Message Posted: Feb 23, 2013 11:35:02 AM
It depends on the vehicle (electromechanical design).
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Saab93turbo

All-Star Author
Washington
Posts:509 Points:89,335 Joined:Dec 2012
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Message Posted: Feb 23, 2013 11:20:48 AM
The government and many consumer advocates like to say "no" but the truth is that SOME cars getter better gas mileage with premium. The EPA has two gas mileage ratings with the 2005 Saab 9-3 (turbo) and they post the results as 1 mpg better with premium. However, the extra costs of premium doesn't cover the savings from 1 mpg.
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DerTaubman

Champion Author
Detroit
Posts:7,454 Points:1,557,720 Joined:Jun 2007
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Message Posted: Feb 23, 2013 11:12:01 AM
The new Dodge Dart is said to require premium to get the best gas mileage.
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Greenrancher

All-Star Author
Indianapolis
Posts:648 Points:253,190 Joined:Apr 2007
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Message Posted: Feb 23, 2013 10:47:37 AM
False.
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jb47

Champion Author
Shreveport
Posts:9,274 Points:1,896,775 Joined:Aug 2007
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Message Posted: Feb 23, 2013 9:46:48 AM
false
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gvan

Champion Author
Chicago
Posts:21,758 Points:2,863,990 Joined:Dec 2004
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Message Posted: Feb 23, 2013 9:23:36 AM
False.
Myth: Premium gas gets better mileage than regular.
Facts: This myth goes back to the 1960s, Mazor says, when only premium gas had detergent, which helps clean the engine and improves its efficiency. However, now all fuel grades have detergents. “Our recommendation is to read your owner’s manual,” says Mazor. “Ninety percent of cars on the road run on regular gasoline.” If you use premium when it isn’t required, he says, the only thing you’re draining is your wallet.
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2Tall

Champion Author
Maryland
Posts:12,965 Points:2,969,080 Joined:Jun 2004
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Message Posted: Feb 23, 2013 9:05:14 AM
False
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jerrit1

Rookie Author
Michigan
Posts:2 Points:4,790 Joined:Feb 2011
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Message Posted: Jan 31, 2013 2:18:57 PM
87 or 91 octane makes no difference to my 2001 Cadillac Deville DTS
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Houckster

Champion Author
Atlanta
Posts:9,410 Points:695,260 Joined:Sep 2003
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Message Posted: Jan 30, 2013 9:12:57 PM
MANDYDONNAPRINC writes (about a 1990 Honda Accord): Why else would Honda recommend using Oct 91? _____ OEM fuel recommendations are based primarily on engine compression ratio. If 91 octane is recommended, the compression ratio is too high for regular.
Nowadays, engines are more flexible and can use varying octane fuels because they can advance or retard the spark as GOUGENATOR points out.
[Edited by: Houckster at 1/30/2013 9:14:10 PM EST]
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paullypuiu

Veteran Author
Georgia
Posts:263 Points:91,370 Joined:Jul 2012
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Message Posted: Jan 30, 2013 7:20:44 PM
i don't know ,i never used premium.
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mandydonnaprinc

Champion Author
Hamilton
Posts:4,160 Points:1,967,175 Joined:Sep 2006
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Message Posted: Jan 30, 2013 7:16:57 PM
My 1990 Honda accord ERX has over 505,000 KM on it, always ran Oct 91; but this last year use Sunoco ultra 64 from U.S.A. Never did anything to motor or injectors. Owners manual recommends Oct 91. I would suggest higher grade of gas is probably better for the engine. Why else would Honda recommend using Oct 91.
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gougenator

Champion Author
Dallas
Posts:30,048 Points:3,271,875 Joined:Aug 2003
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Message Posted: Jan 30, 2013 6:51:20 PM
big urban myth!!!
the stations try to trick you into buying the premium to up thier profits! go figure ,,not to advise in using the "correct" gas for your vehicle
engines nowadays can "adjust" to octane levels (such as buying regular for your premium octane-sucking engine,,to save on the cost)
soooo i dunno LOL
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PDN57

All-Star Author
San Bernardino
Posts:857 Points:163,545 Joined:Aug 2012
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Message Posted: Jan 30, 2013 10:49:53 AM
For 20 cents more a gallon how much more are you expecting? Urban myth?
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BlueberryFocus

All-Star Author
Rochester
Posts:553 Points:129,535 Joined:Feb 2012
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Message Posted: Jan 30, 2013 10:31:07 AM
only if your car requiers or reccomends it
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Seekingone

Champion Author
Louisville
Posts:3,667 Points:995,850 Joined:Aug 2006
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Message Posted: Jan 30, 2013 7:22:46 AM
false
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sheba24

Champion Author
Long Island
Posts:2,450 Points:659,980 Joined:May 2011
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Message Posted: Jan 30, 2013 7:06:56 AM
false
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pacecar68

Champion Author
Oakland
Posts:4,772 Points:889,420 Joined:Jan 2007
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Message Posted: Jan 29, 2013 10:56:38 PM
false...no need to over buy...lol.
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NYRfan

Veteran Author
Cincinnati
Posts:480 Points:306,825 Joined:Jul 2006
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Message Posted: Jan 29, 2013 10:46:52 PM
maybe, but is it worth the extra money?
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emtrob2012

All-Star Author
Myrtle Beach
Posts:978 Points:162,280 Joined:Jan 2012
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Message Posted: Jan 29, 2013 10:35:59 PM
it does but not worth the extra money for the higher grade.
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Houckster

Champion Author
Atlanta
Posts:9,410 Points:695,260 Joined:Sep 2003
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Message Posted: Jan 29, 2013 7:14:15 PM
XBAG writes: I have no clue. _____ My, that was amazingly helpful. You might try reading the link I provided. THEN you would have a clue.
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