Question:
I recently bought a new car that requires premium unleaded gasoline. Given how expensive gasoline has become, I'm wondering if its worth the extra money for name brand gas. I know California has a highly regulated gasoline market so I wonder if there's really any difference.
If you can point me to some authoritative sites I'd appreciate it.
Answers:
the only difference in name brand gas is the additives. in many cases it is the same gas coming from the same refinery. for example, if texaco has a local refinery, then bp will purchase their gas from them and add the bp additives. this saves the cost of transportation from their refinery. texaco will do the same thing. the off brand gas stations buy their gas on the open market to get the lowest prices. hence they will have different brands. if shell is the cheapest, they will buy from shell. i ended up doing this research when by accident i found that my 94 merc. villager only liked bp gas. i had to see what could possibly make a difference. btw: according to klick and klack on NPR's car talk, unless u are driving extremely hard, u dont need premium. your cars computer will adjust the timing for the lower level octanes.
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In many cases, nothing but the price. I can all come from the same terminal on the same truck.Are there any hydrogen powered cars market-ready?
Years ago, I chatted with a woman who was a fuel buyer for a convenience store chain. She said that alot of times, the convenience store-brand gas IS a name brand gas. It just depends what's on the market that week. We always go to Racetrac (southern U.S. chain) and have never had problems with our cars.Where do I start when getting auto financing??
I drive by a pump station, here in Coastal Texas, daily. Every morning I see Shell, Exxon, Valero, Mobil trucks filling up there. SO ...Gas is gas. That being said some of the name brands claim fuel additives for one purpose of another but the gas all has to meet the same requirments for octane and pollution levels. Shop where its cheapest. Why would you buy a "high" operating cost vehical in the first place ?
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All gasoline comes from dinosaurs. Don't worry about it. Oil distributors sell to all brands, so it's all good.
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The octane rating posted on the pump is the same for all gas pumps, and is regulated and tested by the State. 91 octane fuel is 91 octane wherever you buy it. The difference in "premium" brand fuels is that some of them add their own blend of additives into the fuels that they sell. This may, or may not improve the quality of the fuel... It's up to you to decide if it's worth the extra few cents per gallon.How do I wash underneath my car?
There are other factors that effect gas quality, like the construction of the gas station. For example, it's best to avoid gas stations that are at the bottom of a hill. Ground water pools near the gas tanks and can erode the tank. Better to go with newer station that are on high ground.How much would it cost to get my windows tinted for an '04 Lancer in California Bay Area?
So the Car Talk guys on NPR have a reasonable argument and address you question about the value of the name brand gas (http://www.cartalk.com/content/features/... :Are the body's of DMC Deloreans stronger than the cars out today?
"Use the grade of gas you need and nothing higher.
Does your owner's manual say "Premium Unleaded Only"? No? Then don't ever use premium fuel. There. We just saved you 40 cents a gallon... or $8 on a 20-gallon fill up. If your engine is designed to run on regular gas, there's absolutely no benefit to putting in "high test." It pollutes more, it costs more, and doesn't give you any benefit in performance or fuel system cleanliness.
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Now, what if your car DOES call for minimum 91 octane? Well, next time you buy a car, dumkoff, check what kind of fuel it requires first. We've always said that once you buy the car, you're stuck. You've got to use 91, because your high compression engine will ping if you don't. But now, most cars have "knock sensors," that retard the timing via the engine management computer (effectively lowering the compression) to protect the engine, in the event that you happen to get some bad gas, or have an emergency and can only get regular grade fuel. So we got to thinking, what would be wrong with using the knock sensor all the time? What if you put regular gas in the car all the time and let the knock sensor do its job and retard the timing? You'd have a little less power, but that extra 8 bucks a fill up might be more important to you than power right now. It would be to us.
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It's a controversial theory, we admit it. But that's never bothered us before. And we can't think of any long-term effects of driving with the knock sensor retarding the timing. So our position (for the time being) is... use regular. Who cares? Now, if there are any actual automotive engineers in the audience who have worked on knock sensors, who want to tell us why we have our heads up our keisters, feel free to write to us. And if we're convinced that we're wrong, we'll happily change our recommendation."
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Hope this helps!
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