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2003-2009 Nissan 350Z

Gas Type

Old 04-25-2019, 12:22 PM
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frich1230
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Curious if anyone is using Ethanol Free gasoline in their 2007 or older Z. I have a 2007 Roadster with 28,000 miles, is the car OK to use 10% Ethanol, or should I opt for the Ethanol free. If I use ethanol free, and it is no longer offered, any problems going back to the Ethanol Blend


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Old 04-25-2019, 01:18 PM
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bealljk
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I don't think it matters. I believe the 10% ethanol blend will decrease your gas mileage and/or power output very slightly.
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Old 04-25-2019, 01:25 PM
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Correct and with one caveat- use at least 91 octane fuel, whether ethanol free or 10%.
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Old 04-25-2019, 02:39 PM
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Thanks to all, I was worried about the nasty affects that ethanol has on engine components, not suitable for its use


Originally Posted by dkmura View Post
Correct and with one caveat- use at least 91 octane fuel, whether ethanol free or 10%.
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Old 04-25-2019, 03:20 PM
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I always try to fill up with 93 ethanol free. It's probably unnecessary, but that was in my tank when I got it tuned.
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Old 04-25-2019, 09:28 PM
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Ethanol free gas would just be throwing money away. Car engines/components are designed with 'normal' ethanol percentages in mind.

The only place I pay extra to use ethanol free gas is in my carberated lawnmower, 2-cycle/ small engines.
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Old 04-26-2019, 03:19 AM
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You're probably right. I subscribe to the belief that not all fuel from all the gas stations is created equal, but I don't have any scientific data to support that. I guess it just makes me feel better.

Gas mileage on the highway is slightly better, but probably not worth the price difference in the long run.
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Old 04-26-2019, 03:42 AM
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Originally Posted by Heel Til I Die View Post
You're probably right. I subscribe to the belief that not all fuel from all the gas stations is created equal, but I don't have any scientific data to support that. I guess it just makes me feel better.

Gas mileage on the highway is slightly better, but probably not worth the price difference in the long run.
Correct, to a point... its the same basic fuel, but every station or "brand" has their own additives that they add to the base fuel. Thats what I have always been told.
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Old 04-26-2019, 11:32 AM
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Just don't let ethanol blended petrol sit in a tank for a very long time, especially if you live in a humid environment. You need to use a fuel stabilizer for it to keep. In short, don't leave ethanol blended gas/petrol in your tank for extended periods of time (winter storage for example)...bad things start to happen and you could damage your fuel delivery system if you try to use the separated (bad) gas.
-Icer

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Old 04-26-2019, 12:18 PM
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frich1230
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YES !! Exactly what I was afraid of!! I do not use the car much and am fearful of this happening.
Plus the owners manual states "Nissan does not recommend any fuel additive's"
Looks Like a "Catch 22"


Originally Posted by icer5160 View Post
Just don't let ethanol blended petrol sit in a tank for a very long time, especially if you live in a humid environment. You need to use a fuel stabilizer for it to keep. In short, don't leave ethanol blended gas/petrol in your tank for extended periods of time (winter storage for example)...bad things start to happen and you could damage your fuel delivery system if you try to use the separated (bad) gas.
-Icer

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Old 04-27-2019, 02:35 PM
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Yes, ethanol free gas when storing for the winter.

The only other time I fill up with E Free is before track days.
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Old 04-27-2019, 03:19 PM
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I am in Minnesota where temperatures in the winter months drop below zero degrees Fahrenheit.

When gasoline did nor incorporate alcohol, car owners regularly experienced “gas line freeze.” The solution preventing “gas line freeze” was using an additive, which was pouring a can of ethanol alcohol into your gas tank with every fill.

“Gas line freeze” is no longer an issue in Minnesota since ethanol was added to gasoline.
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