Not Logged In Log In   Sign Up   Points Leaders
Follow Us    11:50 AM

Message Forum - Read Message

Category: Fuel Economy > Topics Add to favorite topics   Post new topicPost New Topic
Author Topic: Which BRAND of Gasoline Gets The Best Mileage?? Back to Topics
MPG Lover

Champion Author
Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Nov 8, 2007 9:25:59 AM

I've been researching this for a long time, and it does seem you get what you pay for.

I'd like to hear what others are finding.

For example, I seem to get 10-12% better mileage with CHEVRON than other lower tier gas (Pilot or Maverik, or Mirastar/WalMart).

I really do know 99% of the variables (wind, temperatures, fuel storage tanks, road type, air pressure in tires, etc...) but it does seem the TOP TIER gets you better MPG.

I'd say top tier is Chevron, Texaco/Shell. Am I overlooking some? What do you all find out there?

I used to live in Spokane, WA there and the COSTCO gas, which was always the cheapest, made my car ping (lower octane than advertized??) going up hills, and NO other gas did that. So there does seem to be a difference; maybe some of those additive packages do work better.

My best MPG ever, consistently, is from the Flying J on exit 3 in Evanston WY. Always 20% better MPG going East or West on 80, all seasons. May be the higher elevation.

Thoughts on BRANDS and MPG???
REPLIES (newest first) Topic is locked
Profile Pic
Bartboro
Champion Author Georgia

Posts:1,040
Points:662,745
Joined:Sep 2008
Message Posted: Nov 15, 2008 12:24:23 AM

I have not kept records to prove anything, but at one time used a certain brand of gas, and after I tried several others including the economy types and saw not real difference in MPG.
Profile Pic
GenoAR
Veteran Author Arkansas

Posts:430
Points:950,240
Joined:Oct 2008
Message Posted: Nov 14, 2008 10:42:36 PM

I have been compulsively keeping track of my gas mileage for at least 45 years. I fill up the tank each time I buy and record the mileage, gals.,cost,odometer reading,etc., in a log book that I keep in the car. I also note all service done and any repairs or new parts and such.This allows me to keep track of maintenance and any fall off in performance.
I gave up allegiance to any one brand years ago when I discovered that brand and price paid mean little when it comes to gas .I can't prove that theory but it is my gut feeling based on my experience. Of course if you feel that one brand gives you better mileage, then go for it.
Profile Pic
hgray14
Rookie Author California

Posts:3
Points:7,660
Joined:Jun 2008
Message Posted: Nov 14, 2008 10:12:36 PM

I would guess that a truly scientific test would show that they are all the same, no matter what magic additive they claim makes theirs best. As far as off brands go...they get their gas from the same place that the big boys do; you pay less because of the branding. If you are worried about bad gas (ie, too much moisture in the gas) don't go to stations that are slow. Around my home town even the tiny out of the way gas station sells out of its gas in a day or two so there is no gas sitting around in the tanks for months and months.

Heck, I saw something on the Discovery Channel where they showed that much of the gas the moves from Texas, through the pipelines, up north has no branding at all. Basically, it is all coming from the same refinery and the guys who are buying at the other end pull out their share when they order it. ...same gas for everyone, just pumped into different trucks at the end of the pipeline. It isn't that way everywhere obviously (there is a Chevron refinery near my home that clearly only fills Chevron trucks (well...plus the off brand trucks when Chevron has extra)) but I would guess that you MPG has very little to do with which brand of gas you get. ...isn't it all regulated by the goobermint anyway??? how different could it be?
Profile Pic
gasalley660
Rookie Author Texas

Posts:5
Points:17,375
Joined:Nov 2008
Message Posted: Nov 14, 2008 10:08:08 PM

MPG Lover: Now I see why you use CHEVRON gas, definitely available in Idaho. Back in Illinois, and particularly in the Chicago area, most gasoline includes about 10 percent ethanol - which doesn't help MPG's that much.
Profile Pic
Ennai
Rookie Author Florida

Posts:26
Points:4,805
Joined:Nov 2008
Message Posted: Nov 14, 2008 6:39:47 PM

Most likely I got to try different brands but does the mpg not change with the factors like driving conditions including the traffic which changes every day, so is the real comparison even possible ?
Profile Pic
cheapguy135
Champion Author New Jersey

Posts:1,133
Points:516,035
Joined:Sep 2006
Message Posted: Nov 14, 2008 5:29:48 PM

"Off-brand gas is a risky proposition because you don't know what you're getting and automakers specifically do not recommend it."
Curious..... Who, where, when?
Profile Pic
Rebbe
Rookie Author San Antonio

Posts:57
Points:71,870
Joined:Jun 2008
Message Posted: Nov 14, 2008 2:35:50 PM

I generally get Chevron or Shell anymore or another Top Tier if I can't find a Chevron or Shell...Chevron gas seems to give me better mileage than any other.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Nov 14, 2008 10:59:04 AM

Pinbuster--Thanks again for good input; I agree Farmtech really explained it well.

Gasalley: I moved from IL to ID; it shows IL because it's not easy to change where you're from; you can't do it online or I would. So you're right, I have the Western gasolines to choose from, like Chevron, Sinclair, etc.

I agree with your gas analysis on which brands are good. Sometimes I'll use Phillips 66 here just because they are 100% gasoline, no ethanol.
Profile Pic
gasalley660
Rookie Author Texas

Posts:5
Points:17,375
Joined:Nov 2008
Message Posted: Nov 14, 2008 10:36:00 AM

CHEVRON in Illinois? I thought they were only in the west and the south. I was in Illinois last summer and could only find Shell, BP, Mobil, Phillips 66, Marathon and Clark.

I live in Texas and find that Chevron, Exxon, Mobil and Shell are among the best although Conoco and Phillips are also pretty good. Off-brand gas is a risky proposition because you don't know what you're getting and automakers specifically do not recommend it.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Nov 14, 2008 4:55:10 AM

I agree MPG_Lover. Farmtech's post shows what we've been saying all along that there is a difference in brands of gas.

helpme25 - The best way to test the brands in your area is to do your normal driving and do 4 tanks of each and figure the cost per mile for each brand. That will give you the whole story where as MPG or cost per gallon are only hafl the story.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Nov 13, 2008 9:31:18 AM

That's a good strategy Helpme. Minimize the bad fuel. I'd look for what does you the best, and fill up on that. If your car is sensitive enough to notice, it will probably respond to a good fuel, and you should stick with that to get the best MPG and keep your engine clean.

If anyone wants to know why some vehicles don't notice changes in fuel quality go back and look at Farmtech's post a few pages ago-classic and excellent explanation of what happens when you persist in using low quality fuel.
Profile Pic
HelpMe25
All-Star Author Arkansas

Posts:647
Points:221,540
Joined:Sep 2008
Message Posted: Nov 13, 2008 8:34:38 AM

i don't know which gets the best but i know which i get the worst at either Valero stations or Ez-Mart gas so i try to avoid them both unless its all that is available and then i just get enough to get me by
Profile Pic
pennysaverTX
Sophomore Author Texas

Posts:192
Points:36,400
Joined:Oct 2008
Message Posted: Nov 12, 2008 2:56:57 PM

Shell fuels!
Profile Pic
monisha
All-Star Author New Jersey

Posts:667
Points:133,075
Joined:Sep 2008
Message Posted: Nov 11, 2008 5:49:55 AM

i'm not sure abt it. but i would like to know which one gives
Profile Pic
outlaw329
Champion Author Austin

Posts:9,864
Points:1,906,080
Joined:Aug 2008
Message Posted: Nov 11, 2008 2:27:47 AM

It does not matter the grade I put in the truck or jeep the gas mileage is always the same, but premium is always used in the bikes they do not run on low octane fuel.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Nov 11, 2008 1:53:49 AM

mikerock - You say I don't have anything more important to do than post on gas buddy. Well it seams to me that your the one that doesn't have anything more important to do since you've been a member a year less than me and have more forum posts than i do.
Profile Pic
tobasco
Champion Author Los Angeles

Posts:7,646
Points:2,577,120
Joined:Mar 2004
Message Posted: Nov 10, 2008 9:31:41 AM

I get the same mileage no matter where I buy it. Always buy the cheapest.
Profile Pic
getmoremiles
Rookie Author Missouri

Posts:1
Points:120
Joined:Nov 2008
Message Posted: Nov 10, 2008 9:24:22 AM

Hi Chicago Here! I've used MPG caplet works great 93 olds getting 25 mpg. www.jcurtis.ffivideo.com get from 7-14% increase in milage.
Profile Pic
workfromhome
Champion Author Raleigh

Posts:1,701
Points:638,745
Joined:Aug 2005
Message Posted: Nov 10, 2008 6:14:17 AM

lowest price for me
Profile Pic
WhitehatMI
Sophomore Author Michigan

Posts:117
Points:23,070
Joined:Sep 2008
Message Posted: Nov 10, 2008 5:08:14 AM

With my Dakota V6, BP gives me the best milage, with Shell a close second. No other major brands in the area. It all depends on the additives mixed in at the refinery.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Nov 10, 2008 1:52:18 AM

MPG Lover - Your right. Some automobiles do get the same milage no matter what brand you run in them. I've had a couple like that. But there are other automobiles that are brand peticular. People like mikerock that can't say more than gas is gas probly don't even watch their milage they just fill up and that is it. But when people like us offer our numbers that show for us gas isn't all the same they just scoff at it like we have no clue. That just shows me that people like that don't have an open mind and are just plain ignorant.
Profile Pic
billy44bo
Champion Author Mobile

Posts:9,703
Points:2,094,385
Joined:Feb 2008
Message Posted: Nov 9, 2008 4:37:25 PM

in my dodge Dakota with a 4.7 v8 any gas with out ethanol works goods but only regular that is what the book calls on and I did try 89 oct once and the mileage was off for that tank.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Nov 9, 2008 12:05:48 PM

What matters is if my vehicle(s) think all gas is gas.

If they do ok; I'll buy them what they like to keep em clean and get the best MPG.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Nov 9, 2008 6:40:21 AM

mikerock - All you ever say on these threads is gas is gas. You never show any proof of that theory. Show some proof and maybe people might take what you say into consideration.
Profile Pic
gg42210
Champion Author Kentucky

Posts:1,899
Points:332,970
Joined:Aug 2008
Message Posted: Nov 8, 2008 4:48:48 PM

Shell works best for me, but cost a hair more.
Profile Pic
QUEMAN
Champion Author Jackson

Posts:5,600
Points:2,395,525
Joined:Oct 2005
Message Posted: Nov 8, 2008 12:14:10 AM

DEPENDS ON BLENDS AND ADDITIVES
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Nov 7, 2008 12:42:05 AM

Citationbob: Are you saying you can get straight gas in CA? No ethanol blended in?
Profile Pic
citationbob
Champion Author San Bernardino

Posts:11,143
Points:1,926,920
Joined:Oct 2008
Message Posted: Nov 6, 2008 1:39:34 AM

if you live in the peoples republic of california, all fuel must be of a specific formulation and specific additives. Here, gas is gas or ethanol is ethanol
Profile Pic
adf2240
Champion Author Minnesota

Posts:2,698
Points:599,985
Joined:Dec 2004
Message Posted: Nov 5, 2008 8:20:26 PM

I have had good luck with Super America, or in some states, Speedway.
Profile Pic
Horbie
Rookie Author Georgia

Posts:72
Points:690,820
Joined:Oct 2008
Message Posted: Nov 4, 2008 6:08:14 AM

interesting. i never heard of such a thign. ill take this into consideration. thanks!
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Nov 3, 2008 3:03:16 PM

Ampster--That's a tricky one.

In general, you are better off, MPG-wise with straight gas; so I guess look for the magical union of top tier that is also 100% gas.

Some states mandate 10% ethanol all the time, some mandate its use in the winter only (like WA). But, if it's optional I'd shop around, and maybe let the top tier people know you'd be more inclined if they had 100% gas.

I think ethanol is really a scam, UNLESS your car is tuned to take it, or a Flex Fuel vehicle
Profile Pic
Ampster
Rookie Author Oklahoma City

Posts:45
Points:18,475
Joined:Jun 2008
Message Posted: Nov 2, 2008 10:32:25 PM

okay, but what if the "top tier" sellers here in OKC are the ones selling E-10? In OKC people make a big deal about "Pure gas" and "No corn in our gas" advertisements. I think Conoco might be pure gas, but I'm alsmost positive Shell is E-10 around town.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 31, 2008 3:39:33 PM

victorgiantsfan: Good advice.

I'd take his challenge with your neighborhood top tier gas (we don't have Exxon here, I use Chevron/Texaco primarily, sometimes Sinclair, because it's straight gas, no Ethanol) for a few tanks and see what you think.

Keep records, and it might just pan out like he says.
Profile Pic
granitestater
Champion Author New Hampshire

Posts:12,051
Points:2,032,230
Joined:Oct 2008
Message Posted: Oct 30, 2008 4:53:51 AM

We got some 'splaining to do now...
First--water--water don't burn/water kills gas mileage. Some greedy batards fail to pump their inground tanks and condensation builds up in the bottom of the tank. When it reaches the pump intake-you're paying for gas and getting water.
Diesel--diesel is a more complex hydrocarbon. It takes more to get it burning. But it puts out more energy in the long run. For short trips, it sucks eggs. That's why cars are good with ethanol or gas. And trucks are good with diesel.
Brand vs. no-name--Most brand-name gas has an additive package added at the distributor. Generic gas doesn't. The gas ads use to tout such things as cleaner engines and better performance and better mileage. I don't know of any outfit (Consumer Reports?) ever doing a study on brand vs. brand or generic. The new computer in your car is actually suppose to compensate for that. My sister's Subaru tells her just what she should expect for mileage whenever she fills up. I gotta check that out some time...
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 30, 2008 3:44:41 AM

victorgiantsfan - I'll agree with you there is a difference. You do the best with Exxon, I do the best with Getty/Lukoil, My fiancee' does the best with Irving. Every automobile is different.

My '95 ranger did the best with a local chain of stations gas Merit. I don't know if they were their own regional brand or not but that truck got it's best milage from it and they were the cheapest in the area. My 1999 ranger did the best with Exxon. My 2001 f-150 that I have now did better with Texaco than it does with Getty/Lukoil but the Texaco stations in this area were bought out by shell. I've also have had automobiles it didn't matter what brand you ran in them they got the same milage. My 1985 Escort and my 1984 Dodge aries wagon were like that. As long as you put super in those two cars you got 42 mpg out of the Escort and 37 mpg out of the Aries. If you ran regular in them they would drop down to 35 mpg & 31 mpg respectively.

The only true way to find out what is really the cheapest to run is to test all the brands in your normal driving area doing your normal driving and see what one ends up being the cheapest in cost per mile.
Profile Pic
victorgaintsfan
Veteran Author New Jersey

Posts:255
Points:23,490
Joined:Aug 2008
Message Posted: Oct 29, 2008 9:08:49 PM

Drive on Exxon for 2 weeks. You'll never switch back to no name gas. And yes there is a differance.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 27, 2008 5:00:13 PM

Airduct: No, the source didn't say. It was an email on a yahoo group "libertycounty" that mostly discusses politics in Idaho/nation, but energy policy is part of politics, and after many had run down ethanol, this guy stepped into say there's been a lot of disinformation on ethanol.

When I get home I can post his comments here (need my home email). It really changed my opinion on ethanol if it's all true.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 26, 2008 2:54:19 PM

yes i'd like to know that if i could get 20% better milage by tuning my truck to ethanol i'd be getting an average of about 23 mpg insted of about 19.5 and i wouldn't mind that one bit.
Profile Pic
airduct
Champion Author Florida

Posts:11,319
Points:293,020
Joined:May 2005
Message Posted: Oct 26, 2008 2:08:40 PM

>>I did learn something about Ethanol this week; if your car is tuned for it (and almost no one's is) you get 20% better MPG using Ethanol than gasoline. Interesting.<<

Did this 'source' give the secret as to how to tune the vehicle to do so?

Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 26, 2008 11:01:50 AM

I guess it's not required here, but about 85% of stations sell only that. The ones that sell "straight" gas are now (wisely) advertising "No Ethanol Here".

I did learn something about Ethanol this week; if your car is tuned for it (and almost no one's is) you get 20% better MPG using Ethanol than gasoline. Interesting.

The same source also said, the 1932 Model T with a straight 6 cyl got 32MPG on Ethanol!! Mr. Ford wanted to tune cars for ethanol so farmers/etc could make their own fuel. Mr Rockerfeller sponsored women's suffrage and then the prohibition movement to squeeze ethanol out of the market and ensure people bought gas. Also an interesting point, if true; and I have to say it sounds plausible to me.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 25, 2008 3:47:01 PM

we have the 10% ethanol stuff here to because it's required
Profile Pic
Maineh
All-Star Author Maine

Posts:850
Points:24,395
Joined:Jun 2004
Message Posted: Oct 24, 2008 6:52:22 PM

As long as I can avoid ethanol, the fuel economy of the brands really doesn't differ. But that ethanol sh!t that they use in Connecticut costs me about 4 mpg.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 24, 2008 3:53:03 PM

Thanks Rebbe, that's what I was hoping you'd say!

That's what I find too.
Profile Pic
Rebbe
Rookie Author San Antonio

Posts:57
Points:71,870
Joined:Jun 2008
Message Posted: Oct 24, 2008 3:03:00 PM

That's 2-5 MPG more on the tank of gas MPG Lover...
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 23, 2008 7:36:48 PM

Pinbuster: Your research is top notch; I think mikerock just likes yankin' your chain!
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 23, 2008 4:47:02 PM

I do have a life beyond my charts. you seem to think it takes many hours a day to update them. Sorry pal it takes just a few min and that is it. No you are closed minded in thinking that all gas is the same even when proof is brought to your attention. That is what being closed minded is. But if you don't want possibly save money or maybe keep your automobile running better longer that is your choice I personally don't care what you do but I like to keep more of my money in my pocket and keep my truck running better longer. My thing is don't tell me i'm compleatly wrong unless you have proof to back up your claim like me and others on here have provided proof to back up our claims.
By the way I do all my updating in the morning before I go to work while my fiancee is still sleeping since she goes in a lot later than I do in the morning. I will also do some in the after noon when i get home before she comes home.

[Edited by: pinbuster2005 at 10/23/2008 4:49:56 PM EST]
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 23, 2008 2:05:55 AM

mikerock - You can believe gas is gas if you want. It just shows how closed minded you are to things that people have brought up. Between the post that MPG Lover had from FarmTech to my chart and other things that have been brought up. You are so set in your ways that you can't even think that some of us may be a little bit right. I've said the base gas is all the same what makes the brands different is the additive package that is added to that base gas. I used to think just like you until my father showed me I was wrong. But I'll give you the fact that with some automobiles it doesn't matter what brand you run in them they get the same milage i've owned a couple of those myself. But on the other side of the coin there are automobiles that are brand peticular. The only way to know for sure is to track your milage and see if there is a difference in cost per mile between brands. I know you say saving 3 tenths of a cent per mile isn't worth it. But if you drive 29,000 miles a year on average like i do that adds up to $87 saved. sure it's not a lot but it's better in my pocket than in someone else's.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 22, 2008 4:03:56 PM

mikerock - Sorry to burst your bubble but your wrong. She has enough smarts to know paying a little more is worth it if your getting a better quality product. She tracks her milage just like I do because she wants to make sure she's getting the best bang for her buck. Just because you are too lazy to acctually track your milage and see for yourself that is your problem. You keep just going to the cheapest place i'll go to the one that gives me the cheapest over all cost and give less to the oil companies.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 22, 2008 3:30:53 PM

Rebbe: ?? Is that 2-5 more MPG or 2-5 more miles per tank. Big difference, so I thought I'd ask.

For me Chevron/Texaco/Phillips 66 gives me more like 2-5MPG gain (6-15%).

Very worth it for the 3% more I pay for the gas.

To be fair, the Phillips 66 is w/o Ethanol; but the Chev/Tex has ethanol (yechh) but still brings home the good MPG.

Also, the engine being clean is more than a little bonus. A valve with deposits may burn up or not let the right amount of air in and really mess up an engine.
Profile Pic
MPG Lover
Champion Author Illinois

Posts:1,171
Points:590,075
Joined:Dec 2004
Message Posted: Oct 22, 2008 3:20:14 PM

Moppen & Rock: Actually, 3 gas stations in Seattle had to shut down this year because of water in the gas. 1 was a Safeway, I forget the other 2.

This happens; sometimes gas stations will even settle with customers for water or other contaminants in gas.

Circa 1999 when I lived in WA, a station owner knew of contamination. A friend of mine and I both got $100 in free gas because of contamination problems we had there. I had to get the lines blown out/new filter, my friend had to drop his tank.

Bad stuff is out there, that's another reason to stick with Top Tier.
Profile Pic
Rebbe
Rookie Author San Antonio

Posts:57
Points:71,870
Joined:Jun 2008
Message Posted: Oct 22, 2008 8:02:09 AM

I used to purchase my gas from wherever it was cheaper but I had a friend convince me to always purchase Top Tier Gas such as Chevron or Shell or one of the other fuels listed on the Top Tier Site:

Top Tier Gas Brands

I've been doing that for a few months now purchasing primarily from Chevron or Shell since they are on my daily route and I know they have fuel additives in the fuel to help it run cleaner.

For the past few months I've been logging every purchase and keeping track of the mileage on each tank and it seems that at least for me and my vehicles we get the best milage on Chevron. We get 2 to 5 miles more per tank on Chevron.
Profile Pic
pinbuster2005
Champion Author New Hampshire

Posts:5,455
Points:1,658,470
Joined:Oct 2005
Message Posted: Oct 22, 2008 2:58:40 AM

mikerock - you say only 2 people agree that there is a difference in brands of gas. Your not reading the thread very well. there are many people on here that say there is a difference. But as i've asked and you've never answered. If all gas is the same then why does my fiancee's hyundia accent average 32.5 mpg with unbranded gas and 35-37 mpg with branded gas? It's because there is a difference in quality. If there wasn't the unbranded gas would get her the same milage that the branded gas gets.
Topic is locked Back to Topics