Do you notice better MPG between brands?
Thread Starter
Drifting
Joined: Apr 2010
Posts: 1,740
Likes: 5
From: Central FL
Do you notice better MPG between brands?
My car is an 01 6spd vert and I seem to be getting a full 2 mpg better per tank with Mobil 93 over Shell 93. I do the same mix of driving and the past 4 fill ups with Mobil I've gotten 23 mpg compared to 21 with the past 4 with Shell. I keep track with an app on my iphone and it's pretty consistent what the avg. on the DIC which varies from 22-24 mpg. They're both 93 octane gas so I don't know why I would get better mpg with one over the other.
Le Mans Master
Joined: Feb 2003
Posts: 6,683
Likes: 144
From: Memphis Tennessee
The main reason for differences would be the local provider's blend of winter vs. summer gas. The Winter blend generally yields less economy for us consumers, but not always.
As mentioned in the post above, probably your right foot.
Save the Wave
As mentioned in the post above, probably your right foot.
Save the Wave
Thread Starter
Drifting
Joined: Apr 2010
Posts: 1,740
Likes: 5
From: Central FL
Well I alternated each fill up over the past year and amazingly not on purpose..my foot stays the same-pretty light unless some punk in a Mustang tries to pass me then it's bye bye...
Le Mans Master
Joined: Oct 2007
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From: Kelso Washington
St. Jude Donor '09, '13, '15
I'm not even **** enough to care or keep track on such things. I fill the tank when I need it and where I need it and drive without any concern about my mileage.
Same with my motorhome. I haven't even calculated the mpg because I'm going to drive where I want to go regardless of the mpg or price of fuel.
My commonsensometer would indicate there probably is a difference between some brands but I have no data.
Same with my motorhome. I haven't even calculated the mpg because I'm going to drive where I want to go regardless of the mpg or price of fuel.
My commonsensometer would indicate there probably is a difference between some brands but I have no data.
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Never really noticed much of a difference between brands. Seems the car gets about the same MPG regardless of the brand.
Melting Slicks
Joined: Nov 2011
Posts: 2,789
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From: Jacksonville FL
My car is an 01 6spd vert and I seem to be getting a full 2 mpg better per tank with Mobil 93 over Shell 93. I do the same mix of driving and the past 4 fill ups with Mobil I've gotten 23 mpg compared to 21 with the past 4 with Shell. I keep track with an app on my iphone and it's pretty consistent what the avg. on the DIC which varies from 22-24 mpg. They're both 93 octane gas so I don't know why I would get better mpg with one over the other.
Safety Car
Joined: Jun 2004
Posts: 4,987
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From: Stoney Creek Ontario
Biggest issue is likely the amount of ethanol in the gas....depending on where you're located and which supplier you use, ethanol content varies .... The more ethanol, the less fuel economy....less ethanol = better fuel economy....some higher octane fuels contain more ethanol as it's a cheap way to add octane....
Around here, Shell 91 is the only premium gas without octane, Petrocan 94 contains 10%.......ethanol content is usually listed right on he pump....
Around here, Shell 91 is the only premium gas without octane, Petrocan 94 contains 10%.......ethanol content is usually listed right on he pump....
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Le Mans Master
Joined: May 2006
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From: Pittsburgh suburbs Pa.
My car is an 01 6spd vert and I seem to be getting a full 2 mpg better per tank with Mobil 93 over Shell 93. I do the same mix of driving and the past 4 fill ups with Mobil I've gotten 23 mpg compared to 21 with the past 4 with Shell. I keep track with an app on my iphone and it's pretty consistent what the avg. on the DIC which varies from 22-24 mpg. They're both 93 octane gas so I don't know why I would get better mpg with one over the other.
Le Mans Master
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
Do you know if one of them is ethanol free and not the other. If so, you will usually see worse mileage from the one with ethanol.
For a way to find out, take a look at the following link to see what stations are ethanol free in your area.
http://pure-gas.org/index.jsp?stateprov=FL
For a way to find out, take a look at the following link to see what stations are ethanol free in your area.
http://pure-gas.org/index.jsp?stateprov=FL
Team Owner
Joined: Jan 2009
Posts: 73,568
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From: Somewhere in Mo
St. Jude Donor '09-'10, '14
Yes I do, as much as 2 mpg.
And they must be doing something with the mix because every one of our cars, the MPG has decreased over the past 2 or 3 years. Again, by 2 to 3 MPG.
And they must be doing something with the mix because every one of our cars, the MPG has decreased over the past 2 or 3 years. Again, by 2 to 3 MPG.
Thread Starter
Drifting
Joined: Apr 2010
Posts: 1,740
Likes: 5
From: Central FL
Do you know if one of them is ethanol free and not the other. If so, you will usually see worse mileage from the one with ethanol. For a way to find out, take a look at the following link to see what stations are ethanol free in your area. http://pure-gas.org/index.jsp?stateprov=FL
Pro
Joined: Aug 2010
Posts: 518
Likes: 36
From: Indiana
Biggest issue is likely the amount of ethanol in the gas....depending on where you're located and which supplier you use, ethanol content varies .... The more ethanol, the less fuel economy....less ethanol = better fuel economy....some higher octane fuels contain more ethanol as it's a cheap way to add octane....
Around here, Shell 91 is the only premium gas without octane, Petrocan 94 contains 10%.......ethanol content is usually listed right on he pump....
Around here, Shell 91 is the only premium gas without octane, Petrocan 94 contains 10%.......ethanol content is usually listed right on he pump....
Burning Brakes
Joined: Aug 2010
Posts: 1,148
Likes: 22
From: Portland OR
I just found a Chevron station that is pumping Ethanol free 92/110.I haven't
tried it yet as my vette is still in hibernation but you can bet on it that I will as soon as I can.Ethanol can't be all that good for these engines.
Fred
tried it yet as my vette is still in hibernation but you can bet on it that I will as soon as I can.Ethanol can't be all that good for these engines.
Fred
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Race Director
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From: Norman Oklahoma - The Only State in the Union with no Blue Counties!
Do you know if one of them is ethanol free and not the other. If so, you will usually see worse mileage from the one with ethanol.
For a way to find out, take a look at the following link to see what stations are ethanol free in your area.
http://pure-gas.org/index.jsp?stateprov=FL
For a way to find out, take a look at the following link to see what stations are ethanol free in your area.
http://pure-gas.org/index.jsp?stateprov=FL
Prolly nailed it! GASSOHOL hurts mileage and equipment! I won't run that crap in my vehicles or equipment engines