6MT.net Infiniti G35/G37/GTR Community

**kloh** · 03-19-2003, 05:34 PM

So, in order for the car to operate at peak performance it needs premium fuel. With gas prices skyrocketing (it's getting close to 3 bucks for premium here in SoCal), has anyone else considered using regular for this bad boy? What are your experiences? How much worse is the HP/mileage? I've read that the G35's engine doesn't live up to it's published MPG of 19/25 until after a few thousand miles anyways so I wonder what the harm would be in feeding it some regular occassionally if I'm not that interested in racing performance. Anyone have firsthand experience with this and can you confirm which type of fuel you've been using?

I know I'm gonna get blasted for this one so if you are so inclined, go right ahead and tell me how stupid it is to put regular fuel into this highly sophisticated piece of equipment, and that the incremental cost should not even be a factor, or why bother getting this car if you're not going to redline it -- but what I'd rather hear is, some real facts from someone who's tried it.

Let the onslaught begin...

-Ken [dunce]

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impatiently waiting for my Diamond Graphite...

Semi On · 03-19-2003, 06:04 PM

RTFM.

It says to never put anything other than premium unleaded in the engine.

The sedan can apparently alternate between premium and the middle grade gas but mileage will suffer.

If you deviate from this, you do so at your own peril!

**Gardiner** · 03-19-2003, 07:09 PM

Running regular in our sedan. The G35 sedan gets worse gas mileage than my C5 vette, in town or on the highway.

2003.5 Blue Sedan

**kloh** · 03-19-2003, 10:13 PM

I'd RTFM if I had one... still waiting for my G to arrive, and the waiting SUCKS! [banghead]

Any idea what's different about the sedan engine that allows it to alternate that the coupe doesn't have? The only difference I'm aware of between the engines is that the coupe has more HP than the sedan.

-Ken

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impatiently waiting for my Diamond Graphite...

**Gardiner** · 03-20-2003, 09:45 AM

could be compression ratio or tuning.

2003.5 Blue Sedan

xzellerate · 03-20-2003, 09:57 AM

I use Amoco Clear Ultimate Premium. In Miami all we get is 93 octane. Is this good enough?

XL

2003.5 5AT Sedan Ivory Pearl/Graphite Leather Sport/Premium/Aerokit

**kloh** · 03-20-2003, 10:26 AM

Gardiner,

What MPG are you getting on your sedan?

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impatiently waiting for my Diamond Graphite...

**Gardiner** · 03-20-2003, 07:40 PM

About 23 mpg on the highway.

2003.5 Blue Sedan

**kloh** · 03-20-2003, 09:53 PM

That's not bad considering it's only supposed to get up to 25mpg on the highway.

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impatiently waiting for my Diamond Graphite...

**Chaz** · 03-21-2003, 10:33 AM

Yeah I'm averaging around 22 highway and 17 city...

'03 G35 Sedan.

**kloh** · 03-21-2003, 01:04 PM

Chaz, you using regular or premium?

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impatiently waiting for my Diamond Graphite...

twinpeaks · 03-21-2003, 01:08 PM

93 octane is the way to go...would never put anything else in any of my cars (unless it's a rental!). [boink]

Jedi · 03-31-2003, 03:56 PM

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by twinpeaks

93 octane is the way to go...would never put anything else in any of my cars (unless it's a rental!). [boink]
<hr height="1" noshade id="quote"></blockquote id="quote">
Why I'd never buy a rental car! [

]

"Use the Forced Air Induction Luke"
-Jedi

Jedi · 03-31-2003, 04:01 PM

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by kloh

So, in order for the car to operate at peak performance it needs premium fuel. With gas prices skyrocketing (it's getting close to 3 bucks for premium here in SoCal), has anyone else considered using regular for this bad boy? What are your experiences? How much worse is the HP/mileage? I've read that the G35's engine doesn't live up to it's published MPG of 19/25 until after a few thousand miles anyways so I wonder what the harm would be in feeding it some regular occassionally if I'm not that interested in racing performance. Anyone have firsthand experience with this and can you confirm which type of fuel you've been using?

I know I'm gonna get blasted for this one so if you are so inclined, go right ahead and tell me how stupid it is to put regular fuel into this highly sophisticated piece of equipment, and that the incremental cost should not even be a factor, or why bother getting this car if you're not going to redline it -- but what I'd rather hear is, some real facts from someone who's tried it.

Let the onslaught begin...

-Ken [dunce]

-------
impatiently waiting for my Diamond Graphite...
<hr height="1" noshade id="quote"></blockquote id="quote">

According to the salesperson at the dealership..(which I think he practiced this speech at home in the mirror because of the increased questions due to the rising fuel costs) he states the u can use reg.unleaded but it will reduce the performance by 15-20% overall. He states that it will NOT void your warranty. Hence the words RECOMMENDED . But my thinking is, if your so damn cheap you can afford to put premium in your baby you should have bought an econo car and called it a day. [:P]

"Use the Forced Air Induction Luke"
-Jedi

**kloh** · 03-31-2003, 05:49 PM

<blockquote id="quote">quote:<hr height="1" noshade id="quote">But my thinking is, if your so damn cheap you can afford to put premium in your baby you should have bought an econo car and called it a day. [:P]<hr height="1" noshade id="quote"></blockquote id="quote">

I know, I know... for the record, I'm using premium because a Prius [xx(] wasn't on my short list when I bought this car. I just wanted to know if anyone actually put the regular stuff in and how much performance/mileage loss they experienced.

-Ken

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2003 G35C
5AT | DG + Willow Leather | Nav | Premium | Performance