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  1. #1
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    Premium Gasoline?

    Getting ready to buy a new gas guzzler and I am wondering if I have to use premium gasoline or not. The owner's manual suggests 91 octane, but from what I have read online, seems like a lot of people don't follow that.

    Was wondering if some of you are in this boat and what your experiences have been with using/not using premium gasoline.


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    Re: Premium Gasoline?

    It depends, what are you buying? Are we talking about a truck? Hummer? Muscle car?



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    Re: Premium Gasoline?

    Good time to buy a gas guzzler


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    Re: Premium Gasoline?

    I'm looking at Yukon Denali, the price is right. Need to be able to tow and haul people, so big SUV fits the bill. Actually this is the time to buy the gas guzzlers, I'm down 6k from the asking price negotiating so far.

    Luckily for me, I have a sedan for most driving situations.


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    Re: Premium Gasoline?

    I wouldn't put premium in unless I have a high performance sports car. There is no logical reason why you have to use premium especially with today's gas prices.



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    Re: Premium Gasoline?

    Quote Originally Posted by bufante View Post
    I'm looking at Yukon Denali, the price is right. Need to be able to tow and haul people, so big SUV fits the bill. Actually this is the time to buy the gas guzzlers, I'm down 6k from the asking price negotiating so far.

    Luckily for me, I have a sedan for most driving situations.
    I own one. I use 91 or 93 grade.


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    Re: Premium Gasoline?

    Quote Originally Posted by Cyclonesrule91 View Post
    I wouldn't put premium in unless I have a high performance sports car. There is no logical reason why you have to use premium especially with today's gas prices.
    I pretty much agree, whats making me question this is, the owners manual says the 6.2 engine is high compression, therefor requires it.

    Thanks Wesley.


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    Re: Premium Gasoline?

    Quote Originally Posted by Cyclonesrule91 View Post
    I wouldn't put premium in unless I have a high performance sports car. There is no logical reason why you have to use premium especially with today's gas prices.
    Pretty much agree with this...the only suggestion that I would have is to call the service department and ask one of the service techs why they suggest 91 octane. The techs are on the front lines working on them and will know why, and what happens if you use a lesser octane fuel (if there are or can be issues).


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    Re: Premium Gasoline?

    Quote Originally Posted by bufante View Post
    Getting ready to buy a new gas guzzler and I am wondering if I have to use premium gasoline or not. The owner's manual suggests 91 octane, but from what I have read online, seems like a lot of people don't follow that.

    Was wondering if some of you are in this boat and what your experiences have been with using/not using premium gasoline.



  10. #10
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    Re: Premium Gasoline?

    I've got 203,000 miles on a car that I've used nothing but el-cheapo gasoline with. That should tell you something. If a nearly 20-year-old car works fine with cheap gas, any new car will work fine.



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    Re: Premium Gasoline?

    If it's an imported car, then premium is probably recommended. Smaller turbo or supercharged engines for greater hp need the 91 octane.

    Lexus
    Mercedes
    BMW
    Toyota Land Cruisers
    Nissan large SUVs
    Range Rovers
    all use 91

    The owner's manuals are good guides. Don't disregard the recommendations.

    One of the little secrets with Corvettes is that the standard models can run regular. It's reported in many car magazines, but why would you?

    $0.20/gallon upcharge x total gallons purchased each year is generally not a large amount of money, considering the expected life span of the car or SUV.



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    Re: Premium Gasoline?

    What's the spread between regular and premium right now...$0.20? So a Denali has a what a 30 gallon tank? So you're worried about $6 when you spend >$120 to fill tank????



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    Re: Premium Gasoline?

    Quote Originally Posted by leroycyclone View Post
    If it's an imported car, then premium is probably recommended. Smaller turbo or supercharged engines for greater hp need the 91 octane.

    Lexus
    Mercedes
    BMW
    Toyota Land Cruisers
    Nissan large SUVs
    Range Rovers
    all use 91

    The owner's manuals are good guides. Don't disregard the recommendations.

    One of the little secrets with Corvettes is that the standard models can run regular. It's reported in many car magazines, but why would you?

    $0.20/gallon upcharge x total gallons purchased each year is generally not a large amount of money, considering the expected life span of the car or SUV.
    Maybe not for one person, but when you scale it up it adds up in a hurry. I figure that I probably use ~10 gallons/ week. 10 x 0.2 x 50 = 100 dollars. Now if you can get millions of people to start using the more expensive stuff, you're talking real money. Even more money if you can figure out a way to cheaply boost the octane, like by dumping in some alcohol.


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    Re: Premium Gasoline?

    As I understand it, on new cars that "require" premium or high octane grades the computer will compensate for lower octane gas by adjusting the timing to protect the engine from knocking (premature combustion caused by high compression ratios or turbo/supercharging). So you're performance and mileage may not be what it "should" be. If it were me, I'd probably go with the cheap stuff for day to day driving, but fill up with premium if doing any significant towing.


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    Re: Premium Gasoline?

    Quote Originally Posted by brokenloginagain View Post
    What's the spread between regular and premium right now...$0.20? So a Denali has a what a 30 gallon tank? So you're worried about $6 when you spend >$120 to fill tank????
    Yeah I know, doesn't hurt to ask.

    It's actually $0.30 I think, which equates to close to $9.00 a tank.


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