I have an Audi, it has a warning on the gas cap to use minimum of 91. The manual even says which gas stations I should use "for best performance."
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Post Your Last Purchase XXVI
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I have an Audi, it has a warning on the gas cap to use minimum of 91. The manual even says which gas stations I should use "for best performance."
$45 to fill your tank! So unfair. Our government has really got to think about fuel taxation. I only drive a 1.6L Petrol Ford Focus. I think I'll get the floor taken out and drive like Fred Flintstone!
Last time I filled up (few weeks ago and prices had come down a fair bit by then) it was almost £90! - thats $143 for you guys n gals across the pond.
Really must get a cheeper to run car at average of 22mpg the coupe sucks!
Sorry to derail slightly, but I did buy milk yesterday if that gets us back on topic
Preordered the PS4 and accessories way back when they started taking preorders for our boys. Picked up some of the preordered accessories today. Even if I mainly game on my gaming pc, I've always been a fan of Sony PS exclusives. Looking forward to playing Infamous Second Son when it comes out. Kids our excited for Friday to come... they selected Knack for their first game.
Just...no.
http://usatoday30.usatoday.com/money/autos/2003-07-30-premiumgas_x.htm
Not a perfect article, but it gets the important points across well. It touches on the concept of premium gas having higher energy density than regular- just to ballpark it, regular gas at $3 and premium at $3.20 in a car that gets 30mpg on regular would need near enough a 2mpg jump in efficiency just to break even on the added cost. The benefit in real world usage isn't there.
Indeed. While they do run more efficiently, you wont gain anything by it economically speaking. There are some small city cars that gain from premium fuel (Euro 98), but those are few and the gains are marginal bordering on statistically insignificant.
And for the record, consider yourselves lucky, it costs me 124USD to fill up my tank. 62 liters = 16.37 US gallons. And that's standard fuel, premium lands on 131USD.
EDIT: And gas prices went down a lot in the last few weeks, its 13.98 SEK right now per liter, normally its closer to 15SEK. Hereabouts it usually around 14.70. But in the city its just short of 15 SEK.
And for the record, consider yourselves lucky, it costs me 124USD to fill up my tank. 62 liters = 16.37 US gallons. And that's standard fuel, premium lands on 131USD.
EDIT: And gas prices went down a lot in the last few weeks, its 13.98 SEK right now per liter, normally its closer to 15SEK. Hereabouts it usually around 14.70. But in the city its just short of 15 SEK.
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Nothing major, just a full tank of gas
It looks like I am one of the few that is still clinging to my old license plate. I just renewed my registration a couple of weeks ago, and was able to keep it for another 2 years. I hope I can skip that plate until the next version comes out.
Just got a new car and transferred my old New York State plates . I hate the new ones as well
I don't remember the exact numbers but it was about $20 cheaper to keep my old plate so I am happy. Looks like we are in the minority right now though.
I wish i could have had the old plates, i hate the new ones and hate seeing them on my car every single time i see them, but it was a brand new car and i had no plates to transfer over because it is my first car and i bought it myself, hopefully the new ones are a lot nicer and if they are, I'm definitely going to get them for sure...
Don't forget the guy who pushed for these plates was legally blind. I am not surprised they are that bad.
(I am sure he didn't design them, but I bet he approved of it without seeing them)
A Philips 8620/02 Perfect Care steam generator iron.
I had a £20-off coupon for the electrical department in Tesco, so I finally dug out all my Club Card vouchers, doubled-up the value of £75 worth to £150 and ended up with the iron for free, essentially. Bonus.
I had a £20-off coupon for the electrical department in Tesco, so I finally dug out all my Club Card vouchers, doubled-up the value of £75 worth to £150 and ended up with the iron for free, essentially. Bonus.
Just got a Time Capsule, 2TB 3rd Gen off eBay, £80 seemed like a good deal, its on its way now!
/"\/oo\/"\;18352817 said:
Thing is I do get easily 2+ mpg from using 91 so good try though.... Maybe your Ford or Chevy or car like that doesn't know how to adjust for the higher octane but my car and many others do.
Plus my car is tuned so I don't really have a choice.
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Last time I filled up (few weeks ago and prices had come down a fair bit by then) it was almost £90! - thats $143 for you guys n gals across the pond.
Really must get a cheeper to run car at average of 22mpg the coupe sucks!
Sorry to derail slightly, but I did buy milk yesterday if that gets us back on topic
$143 what in the world are you driving a tank?! I get around 22 also usually takes me around $70 prices how come down though so should be around $65 next time. That's using the highest octane also. 17-18 gallons.
As someone from California, I agree. The statue of liberty plates were even cooler!
I couldn't agree more! when new york had those, i hope they were modernize those instead have a bad knockoff of old ones, I'm very jealous my parents still have those plates with the statue of liberty on both of their cars
wanted a pair of on ear headphones for the gym, i know i could have purchased better headphones and i could care less, i wanted comfort, i tried other ones and they weren't comfortable at all, so i had a bunch of gift cards to best buy and got these today, the Beats Mixr, the sound quality is actually not bad shockingly, much better then the new studios in my opinion and on par and actually better for a bunch of the songs that i listen to then the klipsch i was using
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Wait, you're joking...right?
You're saying that your car sees an increase in efficiency that can't be consistently measured in a laboratory because the difference is so minute, and then go on to say that your car is tuned so you don't have a choice but to use only premium? When have you ever used regular gas? Before the car was tuned specifically for the properties of premium? Tuning would make the motor more efficient for whichever type of fuel being used (duh), not just changing the fuel.
Dipping back into science, the numbers I provided were based purely on cost benefit not how motors actually respond to the change in fuel. Looking at the article, going from premium to regular fuel decreases power by 5% under constant, absolutely ideal conditions (probably at the crank, which is where manufacturers measure output. But we'll assume they mean at the wheels since that'll give us a bigger difference) and we'll assume that the decrease in power corresponds directly to the additional fuel needed to compensate for the lost power (it doesn't actually correspond, the additional fuel needed is less than the power loss as a percentage) for the sake of discussion. Given that you're "around" 22mpg on premium, switching to regular would give you 20.9mpg. And you're claiming +2mpg from that, which means you should be getting 23(+)mpg...over twice the difference that the people who design the motor say there is. And that's before considering that your car isn't being operated in anything resembling ideal conditions or the myriad of unaccounted for variables.
And what do you mean, "or car like that?" Do you hate poor people or something? I guess you could make good arguments that Corvette Z06s and Ford GT500s run pretty poorly on premium...oh wait, no. It must be so rough to have a car like that and not whatever you have.
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/"\/oo\/"\;18359795 said:
I think they're getting at that a chevy cruse or ford focus or any car similar to that is going to see no difference between regular or premium gas. Once you step up to higher end cars having most have engines that require premium gas and do get performance and efficiency gains from it. I don't thing anyone compares the corvette, or even camaro, or the GT500 to the cruse and focus.
I agree, I just don't think anybody buys those cars in general for fuel efficiency, they know they're going to be pigs on gas but who cares! You're still driving a Vette Irma Camaro or a GT500
That's the thing though- the Cruze and Focus, particularly late models, are already so efficient with fuel consumption on regular that they stand no benefit from running on premium. And if the added cost of of simply putting premium into those cars was more than offset and the increased fuel economy that adam044 is claiming occurred, don't you think that Chevrolet or any other company would be advertising it as madly as their fuel consumption numbers?
Moving to cars that are designed for premium, you're absolutely right that they provide higher specific output when using premium, no argument there. However, with a car that's driven daily in a vaguely reasonable manner...what percentage of that power is being used at any given time? Or how often is something approaching peak power needed? If a car with 300hp doesn't exceed ~4000rpm on any given day and averages ~2700rpm for that day, how much of that power is needed? Looking around at dyno charts that measure the power output at any given RPM, it's probably around 100hp that's being output at 2700rpm. The 5% performance swing, either way it's applied, is negligible and would fall into the margin of error if it were measured on a dyno at the wheels. Add to that the motor doesn't need to work 5% harder to make up for the loss of power...and again the benefit just isn't there.
That all goes out the window when you start talking about performance exotica like the Z06 or GT500, where you want every last bit of power everywhere you can get it and everything needs to be turned up to 11. But for the average BMW, Lexus, whatever that mostly just putts around, the increase in performance from premium isn't being used, so why waste money to have the capability?
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