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Ok to use 87 octane gas on an 04 g35 sedan AT?

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Old 10-02-2013, 04:24 PM
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Ok to use 87 octane gas on an 04 g35 sedan AT?

hello, i bought an 04 g35 sedan as a beater, i dont really care too much about longrun impacts as im not planning to keep the car for more than 2 years (using for baby seat access, i came from a coupe).

ive read some mixed threads on which gas is ok, my gas tank doesnt have a sticker thay says "recommended". however is it really ok to use 87 though? or is premium required
Old 10-02-2013, 04:46 PM
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It's your car, you can run whatever grade gas you want.

Just know that the difference between 87 and 91/93 is not about gas mileage or any ridiculous idea you might have at this point. The higher octanes, the better the gas is at preventing detonation in your motor, which is something you need to worry about in any high performance motor that either revs a lot, or is just pushing out a lot of power.
Old 10-02-2013, 05:04 PM
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It's explained well in the owners manual.

For Sedans... (unsure if the Sedan 6MT applies here as well)

You won't get max performance, but you can get around on 87 octane. The sedan is a premium "recommended" car, not a premium "required" car.


With that said, what gas you run is up to you and what you plan on doing with the car. Commuting from point A to point B might be perfectly fine with 87 octane. If you start taking trips down the dragstrip or WOT blasts down the highway, you might need higher octane to prevent detonation.

My sedan is my "beater". I hate using that word because I genuinely care about the car...but I pretty much only commute to work in it and have run 89 octane for the last 50K miles without any noticable issue. I'm sure it would run the same on 87 octane, but I sometimes drive a little aggressive.


The coupe is a different story before anyone chimes in. The owners manual gives you a "holy ****" list of things to do if you accidentally put 87 octane in it. You pretty much should stick to 91+ with a coupe.
Old 10-02-2013, 05:21 PM
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Quote:
Originally Posted by taimysho0 View Post
hello, i bought an 04 g35 sedan as a beater, i dont really care too much about longrun impacts as im not planning to keep the car for more than 2 years (using for baby seat access, i came from a coupe).

ive read some mixed threads on which gas is ok, my gas tank doesnt have a sticker thay says "recommended". however is it really ok to use 87 though? or is premium required
Using 87 octane will cause your house and car to blow up

Telcoman
Old 10-02-2013, 05:24 PM
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Quote:
Originally Posted by Mustang5L5 View Post
It's explained well in the owners manual.

For Sedans... (unsure if the Sedan 6MT applies here as well)

You won't get max performance, but you can get around on 87 octane. The sedan is a premium "recommended" car, not a premium "required" car.


With that said, what gas you run is up to you and what you plan on doing with the car. Commuting from point A to point B might be perfectly fine with 87 octane. If you start taking trips down the dragstrip or WOT blasts down the highway, you might need higher octane to prevent detonation.

My sedan is my "beater". I hate using that word because I genuinely care about the car...but I pretty much only commute to work in it and have run 89 octane for the last 50K miles without any noticable issue. I'm sure it would run the same on 87 octane, but I sometimes drive a little aggressive.


The coupe is a different story before anyone chimes in. The owners manual gives you a "holy ****" list of things to do if you accidentally put 87 octane in it. You pretty much should stick to 91+ with a coupe.
How would a sedan be any different from a coupe when they both run the exact same motors?

And no, you can't run anything less than 91 on a 6MT sedan with the revup motor without at least a few hiccups.
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Old 10-02-2013, 08:17 PM
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Originally Posted by dofu View Post
How would a sedan be any different from a coupe when they both run the exact same motors?

And no, you can't run anything less than 91 on a 6MT sedan with the revup motor without at least a few hiccups.
They are different because it's an '04, and not a revup motor. What mustang wrote is factual.
Old 10-02-2013, 11:24 PM
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You can run 87 in the coupe or sedan plenty of people do it and it won't harm anything
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Old 10-02-2013, 11:33 PM
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That is how you may think in the South, but here in the North we run our coupes with 91 because we want do not want to blow up our houses and cars.

/troll
Old 10-03-2013, 12:05 AM
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Sure you can, but VQ engines have always favored premium octane. You will get slightly better mileage and better performance on premium. To me spending the extra $5 on quality 93 octane is worth it.
Old 10-03-2013, 09:46 AM
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Before this turns into another octane debate, I'm just simply answering the OP's question as to if he can run 87 octane in his 2004 sedan.

From the owner's manual. (this is a 2005 manual)

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Don't shoot the messenger here. Just answering his question. Make your own informed decision as to what gas you put in your own car.

Last edited by Mustang5L5; 10-03-2013 at 10:00 AM.
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Old 10-03-2013, 01:18 PM
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And there you have it.
Old 10-03-2013, 01:27 PM
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I've run 87 and 89 in my baby on the low octane map in Osiris and it knocked and pinged like a ****. Never again.........

Can you use low octane yes, should you, not in my opinion.
Old 10-03-2013, 01:41 PM
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in the AT, yes, in the MT, HELL NO!
Old 10-03-2013, 03:01 PM
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Quote:
Originally Posted by Blue Dream View Post
I've run 87 and 89 in my baby on the low octane map in Osiris and it knocked and pinged like a ****. Never again.........

Can you use low octane yes, should you, not in my opinion.
In my opinion yes if you want to save some money

Neither one of my Infiniti's knocked using regular

Here is my MPG one month test results on my previous 06 G35 6 sp manual using 91 and 93 octane.in 2009

It was a waste of money



I have now driven my two Infiniti's over 200k miles on regular 87 octane with no issues.

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Old 10-03-2013, 03:34 PM
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Originally Posted by spgoode View Post
They are different because it's an '04, and not a revup motor. What mustang wrote is factual.
So you are telling us that the 04 non-revup motors in the sedans are somehow different from the 04 non-revup motors in the coupes?

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