Is one gas brand better than the other?

Discussion in 'Fuel Economy' started by taylormah, Mar 5, 2009.

  1. taylormah

    taylormah Active Member

    I have heard a lot about Chevron Techron fuel system cleaner. Today I was passing by a Chevron gas station and noticed the Chevron gas comes with Techron pre-mixed. So does that mean using Chevron gas in my car will keep the fuel system automatically cleaner - thereby keep car running smooth??

    I have also heard from people that Shell, even though its comparatively bit expensive, is a superior brand than am/pm, 7-eleven or other brands, but they dont say in what respect. If I am concerned about FE and overall performance of my car, should I be choosing one brand of gas over the other?
  2. SentraSE-R

    SentraSE-R Pishtaco

    When I lived in Alaska, all the gasoline in the state came from the same Tesoro refinery. The different brands specified their own additives in some cases, but that was the only difference, other than grades. In fact, I watched the same tanker truck drive from one gas station to another. After that, I just buy the cheapest gas available.
  3. Psion

    Psion Hyper-Beginner

    I'm not sure about the Chevron brand, but I have had some reports from some car junkies that they have seen an improvement in smoothness when consistently using Shell.
    As I assume they know more than me, I attempt to fill up with Shell when I can.
    If anyone has any other recommendations, I'm sure we'd be all ears.
  4. Mr. Pancake

    Mr. Pancake Well-Known Member

  5. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    I choose Texaco because that's the only station around here with straight gas. Otherwise, I don't think there's a difference.
  6. ILAveo

    ILAveo Well-Known Member

    I don't know how much difference the brand makes, but BP, at least, can test for their own gas as noted in this article about a midwestern distributor that was cheating on the brand. The distributor subsequently developed troubles with Marathon and Citgo and is currently in Chapter 11. They are cheap, but buy gas from their stations at your own risk I suppose.

    Last summer I posted a link to an Iowa case where a retailer was caught selling E85 as regular. A major brand or well known chain provides at least a little assurance that I'm getting the advertised grade. In my area Casey's and Kum & Go seem to be fairly cheap and I'm unaware of any shenanigans on their part (for instance, when I've removed tanks for them they have been properly maintained and premium lines fed from tanks tagged for premium. )
  7. aca2983

    aca2983 Well-Known Member

    I has been my experience with several cars, that in my area at least, Shell is best. At least compared to off-brand gas, I seem to get marginally better mpg with Shell.
  8. greenrider

    greenrider Well-Known Member

    From personal experience, I pick up a case of Techron from Costco and run a bottle through the car when it gets down to around 1/2 full or slightly higher every 3 or 4 months. Usually there is a noticeable improvement in performance.
  9. jim isbell

    jim isbell Well-Known Member

    I was going to stay out of this because I am a scientist and don't even believe what I have seen with my own two eyes unless I can PROVE it. BUT, seeing all the comments about Shell, I had to jump in.

    Many years ago I drove a 1958 Continental Mark III. It had a HUGE engine and was really picky about fuel. Over time I discovered that when I put Shell gasoline in the thing it definitely ran smoother at idle. Now I just couldn't believe this since I knew that ALL the gasoline came from the same tank at the supply depot, BUT...I watched it happen time after time.

    This was back in the day when gasoline was less than 20 cents a gallon so I never bothered to measure the mileage except to note that it was about 7 mpg under most conditions.

    The comments I see here make me more convinced, BUT NOT TOTALLY convinced that Shell does, indeed, put something in their gas that is good for the car.
  10. Ford Man

    Ford Man Well-Known Member

    In my '88 Escort I've noticed considerably better mileage (usually 5%-15%) from Texaco, Sam's Club and even an off brand Quality Mart than from BP or Citgo. To be truth the best tanks I have had all winter have come from the Quality Mart gas so I've been using their gas pretty regularly for about a month now. I also ran a tank of Shell recently and although it did get better mileage than the BP or Citgo it still didn't do as good as some of the other brands I just mentioned. That's the only car that I own that I have noticed brand making a difference in.
  11. jim isbell

    jim isbell Well-Known Member

    I seriously doubt that you could measure the difference in mileage from one brand to another. They are all about the same BTU rating. BTU, NOT additives, makes the difference. For instance, Diesel has a higher BTU rating than it any wonder that diesels get better mileage?? For many years diesel sold for less than gas until the "Energy" companies realized they were in the business of selling energy...Duhhhh. Then they raised their prices to reflect the BTU (energy) content of the fuel.

    But I do believe that additives, while in no way changing the mileage of the car, could improve the running by keeping various parts clean.

    I would bet that if you took into consideration all the other things that affect mileage, mood, tire pressure, awareness of the problem, traffic, temperature, terrain, oil change interval, oil type, humidity, wind, and the list goes on and on, you would find that type of gasoline would have the lowest and perhaps an unmeasurable effect.

    Now if you put in an additive that contains MORE BTU per gallon than gasoline, then you could raise the mileage. BUT...if the energy companies had such an additive they would be selling it outright, not adding it to gasoline!
  12. Pat8635

    Pat8635 Member

    :Banane59:Unusually get gas where it is cheapest...but on road trips noticed in my hondas that I could get over 36 mpg. When I got my hybrid I expected great things from chevron. In 3000 miles the chevron tanks are the worst mpg and I had the hardest time keeping the ice from running. Costco has been the best... Go figure...
  13. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    I also favor Costco gas.
  14. SentraSE-R

    SentraSE-R Pishtaco

    For my part, I've boycotted Exxon gas since 1989, Mobil gas since its merger with Exxon, and now I've got a lifetime boycott going against BP/ARCO/Amoco.
  15. worthywads

    worthywads Don't Feel Like Satan, I am to AAA

    Okay, so who are your good guys? ;)
  16. diamondlarry

    diamondlarry Super MPG Man/god :D

    I've had my best tanks in the Prius with Shell gas.
  17. deleond2

    deleond2 Well-Known Member

    The Conoco-Phillips stations are the main ones here in town that are ethanol free, and as the temps start to dip, my tanks continue to be the best ever.
  18. SentraSE-R

    SentraSE-R Pishtaco

    You know the answer. You're dealing with Lucifer, Beelzebub, Satan, Mephisto, and El Diablo. If you're wise, you wash your hands and walk away as fast as you can.
  19. oldlar

    oldlar Well-Known Member

    I never found much difference in brands. I'm pumping 87 octane from Cheveron, Shell, Sunoco, Raceway, Race Track, Murphy Oil (Walmart), Sam's Club, BP, Flash, Caseys. If I'm on the road, I get whatever gas is available at the exit. After 74,000 miles I'm still getting an average MPG better than the EPA rating for highway mileage.

    I've tried pure gas from a nearby BP station and still saw no difference in mileage. Most mpg gains or losses are from driving techniques, rather than brand of gas. I've tried 93 octane and did not see any mpg major improvements, but just a lighter wallet at the pump.
  20. PaleMelanesian

    PaleMelanesian Beat the System Staff Member

    When the last stations in my area stopped carrying pure gas, it was because their supplier stopped providing it. Three gas stations, one supplier.

    A Texaco station, a Chevron station, and an Exxon station. I know that those three, at least, have the same gas in their tanks.

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