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Author Topic: True or False = Higher Grade Gas Gives You Better Mileage? Back to Topics
nycztony85
Veteran Author
New York

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Message Posted: Nov 15, 2012 9:33:52 PM

people say premium gives you better mileage then Regular True or False?
REPLIES (newest first) Post a Reply
priver
All-Star Author Alberta

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Message Posted: Sep 10, 2013 8:27:36 PM

wouldn't know just buy regular. More money for beer that way..
xbAG
Champion Author California

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Message Posted: Sep 10, 2013 7:28:42 PM

I have no idea.
I get regular n my car runs fine.
it is not a high performace car.
GrizzlyRaptor
Sophomore Author Sacramento

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Message Posted: Sep 10, 2013 5:54:30 PM

Depends on the engine. High compression engines require high octane.
lwood655
Champion Author New Orleans

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Message Posted: Sep 10, 2013 3:28:31 PM

false most automobiles are set up to
run regular
Guile69
Rookie Author KW

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Message Posted: Sep 10, 2013 2:40:00 AM

False
travelzonecente
Champion Author Riverside

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Message Posted: Sep 10, 2013 12:26:42 AM

False Gas is Gas
GrumpyCat
Champion Author Alabama

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Message Posted: Sep 1, 2013 10:18:20 AM

It is wrong to make this generic claim.

There are a few engines which will get better MPG on higher octane rating.
And there are others which will get worse.

A Prius wil throw a CEL (Check Engine Light) at you for giving it 93 octane.
lwood655
Champion Author New Orleans

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Message Posted: Sep 1, 2013 10:18:03 AM

I don't think it does
urpostman
All-Star Author Calgary

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Message Posted: Sep 1, 2013 10:16:02 AM

false
urpostman
All-Star Author Calgary

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Message Posted: Aug 24, 2013 3:18:08 PM

false
delgadobb
Rookie Author Nevada

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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.
cujo1977
Champion Author Nashville

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Message Posted: Apr 28, 2013 6:48:25 AM

none for me
RNF
Champion Author Indiana

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Message Posted: Apr 28, 2013 6:39:06 AM

False
stoessner
Rookie Author Cleveland

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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.
MBar351
Champion Author Raleigh

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Message Posted: Apr 24, 2013 9:29:38 PM

I've never been able to detect any significant difference.
streetirsx
All-Star Author North Dakota

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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.
fan2love
Champion Author Vancouver

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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.
BartandLisa
Champion Author Newfoundland

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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.
BGSG_63
Rookie Author Phoenix

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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
giwan
Champion Author Michigan

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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
sheba24
Champion Author Long Island

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Message Posted: Apr 10, 2013 7:03:20 AM

false
Maxer105
Champion Author New Jersey

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Message Posted: Apr 10, 2013 6:49:16 AM

Don't know, never tried it.
BeaON
Champion Author Ontario

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Message Posted: Apr 10, 2013 6:40:12 AM

I don't now.
nurdco
Champion Author Colorado Springs

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Message Posted: Apr 10, 2013 6:14:12 AM

FAUX
DanFMA
Champion Author Massachusetts

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Message Posted: Apr 10, 2013 6:08:24 AM

False.
MIT05
Champion Author Massachusetts

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Message Posted: Apr 10, 2013 5:40:56 AM

A little bit, not much.
twt
Champion Author Virginia Beach

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Message Posted: Apr 10, 2013 4:01:25 AM

It's not worth the difference in price.
petromonitor
Champion Author Toronto

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Message Posted: Apr 9, 2013 11:28:50 PM

False
bmxstud
Veteran Author Chicago

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Message Posted: Apr 9, 2013 10:16:59 PM

depends
PassmyGas
All-Star Author North Carolina

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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
streetirsx
All-Star Author North Dakota

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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
PhilnTX
All-Star Author Dallas

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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.
dvx4002004
Sophomore Author Medford

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Message Posted: Apr 9, 2013 1:41:39 PM

True
Onlypremiumg
Rookie Author Ontario

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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!
tpinilla
Rookie Author Atlanta

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Message Posted: Feb 24, 2013 8:30:57 PM

F for most ofus
GBMAX
Champion Author Phoenix

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Message Posted: Feb 24, 2013 9:25:55 AM

Some cars.
cogas1
Champion Author Colorado

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Message Posted: Feb 24, 2013 9:21:17 AM

False.
5p33df73ak
Sophomore Author Gary

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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.
petromonitor
Champion Author Toronto

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Message Posted: Feb 23, 2013 1:01:48 PM

False
ace12012
Champion Author Phoenix

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Message Posted: Feb 23, 2013 12:20:14 PM

depends on the engine.
gas_phil
Champion Author Sacramento

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Message Posted: Feb 23, 2013 11:35:02 AM

It depends on the vehicle (electromechanical design).
Saab93turbo
Champion Author Washington

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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.
DerTaubman
Champion Author Detroit

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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.
Greenrancher
All-Star Author Indianapolis

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Message Posted: Feb 23, 2013 10:47:37 AM

False.
jb47
Champion Author Shreveport

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Message Posted: Feb 23, 2013 9:46:48 AM

false
gvan
Champion Author Chicago

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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.

2Tall
Champion Author Maryland

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Message Posted: Feb 23, 2013 9:05:14 AM

False
jerrit1
Rookie Author Michigan

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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
Houckster
Champion Author Atlanta

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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]
paullypuiu
Veteran Author Georgia

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Message Posted: Jan 30, 2013 7:20:44 PM

i don't know ,i never used premium.
mandydonnaprinc
Champion Author Hamilton

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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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