G35 Sedan V35 2003-06 Discussion about the 1st Generation V35 G35 Sedan

Gas Octane decision

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  #16  
Old 08-18-2007 | 09:47 PM
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Enough said on this topic.

Your car well swallow any regular octane like a hooker looking for her next rock.

I use 94 octane,and yes I admit I've tried the light octane also(regular).

There is no comparison in "milage" or "performance".I am getting the exact same milage on my G with 94 as I did with my Grand Caravan on any regular.For $5 a tank difference I can live with that.

Any and I mean any(at least in Canada) gasoline that is 93 or higher "contains no Ethanol".That crap only plugs up fuel injectors if you use it long enough.

We need that sugar cane stuff they use in Brazil.It's better for cars than fossil fuel,and higher octane than ethanol.

Stay with what your using unless your unemployed!
 
  #17  
Old 08-18-2007 | 11:25 PM
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Originally Posted by OCG35
I must drive too spirited... and I guess everyone else I've ever read, known or heard of owning a G drives too spirited too... 400 miles per tank (especially AT) is totally unheard of.

hwy miles or not.
Then I guess my GPS, and the trip odometer both lied to me. Started at 0, filled up at 398 miles with 3 gallons left which means I could have gone at least 450 miles before running very close to empty. I filled up when my light came on.

That was all highway driving and about 20 miles of hard city driving (my friend wanted to see what the car could do when I got to my destination). It was also before the TT. City driving before the TT I filled up regularly at 265-275 with 4-5 gallons left in my tank. Now its at 220-230.
 
  #18  
Old 08-18-2007 | 11:32 PM
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Originally Posted by izmir41500
I have to check my records. I haven't filled up more than 18 gal. My light comes on around 3 gal to empy. I run 93 octane. 400 miles on a tank is 20 mpg if you run all the way empty, and I get about 20-23 mpg highway so it's theoretically possible. It's very rare though. Usually I get 18 mpg mixed highway and city.
18 mpg is about avg for mixed city/hwy use... even in a relatively spirited fashion.... there is NO WAY IN HELL that ANYONE will avg 400 miles per tank given those numbers... Period.

Unless the driver is running the tank bone dry - which is not the proper way to equate an average miles per tank.

AT averaging 18 mpg the light will come on around 320 miles… if you run more than 20-30 miles beyond that it is not a reasonable figure to conclude miles per thankful.

Those that profess it is… we agree to disagree and I bet my statement stands true.
 
  #19  
Old 08-18-2007 | 11:57 PM
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I pushed it once and got to around 340, but I was scared to death it may stop at any time. Also, I don't know about other people, but my previous car *recommended* 91 octane (not required) and I noticed when I put in 91 I always got better mileage than 87
 
  #20  
Old 08-19-2007 | 02:28 AM
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Originally Posted by OCG35
I must drive too spirited... and I guess everyone else I've ever read, known or heard of owning a G drives too spirited too... 400 miles per tank (especially AT) is totally unheard of.

hwy miles or not.
In 100% highway driving, I've seen as high as 29.8mpg. On the 16.1 gallon fill up, the odometer was at around 479 miles. On average, I see 27-28mpg in straight highway driving so that's about 440 miles on a 16 gallon fill up. In 50/50 driving, I usually see about 23mpg (360 miles) and in staight city, I see 20mpg (320 miles). I've been very pleased with my auto G's MPGs. I use to live in Atlanta which has tons of stop and go and I got even better mpgs.

You must drive pretty hard and/or your mods really compromising your MPGs. Let me guess, you have a true dual exhaust? I had the Borla TD on my G for two weeks and my MPGs dropped by over 25% under the same driving styles. Your 3.7 gears aren't helping thing either.
 

Last edited by DaveB; 08-19-2007 at 02:40 AM.
  #21  
Old 08-19-2007 | 02:34 AM
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As for running 87, it's fine. Your engine won't blow up. The engine has a very sensitive knock sensor and it will detect knock that you most likely can't hear. The downside to running 87 is the engine will be far more prone to knock/detonation, therefore the ECU is going to correct this problem by pulling timing and adding fuel to cool the combustion chamber. The end result will most likely be worse fuel mpgs than you got on 91+. In end, I don't think it's going to save you any money.
 
  #22  
Old 08-19-2007 | 02:59 AM
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Originally Posted by DaveB
In 100% highway driving, I've seen as high as 29.8mpg. On the 16.1 gallon fill up, the odometer was at around 479 miles. On average, I see 27-28mpg in straight highway driving so that's about 440 miles on a 16 gallon fill up. In 50/50 driving, I usually see about 23mpg (360 miles) and in staight city, I see 20mpg (320 miles). I've been very pleased with my auto G's MPGs. I use to live in Atlanta which has tons of stop and go and I got even better mpgs.

You must drive pretty hard and/or your mods really compromising your MPGs. Let me guess, you have a true dual exhaust? I had the Borla TD on my G for two weeks and my MPGs dropped by over 25% under the same driving styles. Your 3.7 gears aren't helping thing either.
Hell yes brother!!!!!!! I drive the hell out of my car and love kicking @ss all over cars like yours!!!! sooo fun! This really made me smile! litterally!
 
  #23  
Old 08-19-2007 | 07:32 AM
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Originally Posted by DaveB
In 100% highway driving, I've seen as high as 29.8mpg. On the 16.1 gallon fill up, the odometer was at around 479 miles. On average, I see 27-28mpg in straight highway driving so that's about 440 miles on a 16 gallon fill up. In 50/50 driving, I usually see about 23mpg (360 miles) and in staight city, I see 20mpg (320 miles). I've been very pleased with my auto G's MPGs. I use to live in Atlanta which has tons of stop and go and I got even better mpgs.

You must drive pretty hard and/or your mods really compromising your MPGs. Let me guess, you have a true dual exhaust? I had the Borla TD on my G for two weeks and my MPGs dropped by over 25% under the same driving styles. Your 3.7 gears aren't helping thing either.
Damn, you must drive like a grandma. I've never seen higher than 18mpg with mostly city and some highway.
 
  #24  
Old 08-19-2007 | 11:27 AM
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Guys, i have did the odometer and I get right around 400 miles per fill up. Yes I am almost sucking it dry, I think I have around 1 more gallon after 400 miles. Why cant I fill up on almost empty everytime? My light comes on at around 320 or so and I still have a few gallons to go. Its a 20 gallon take, why not get 20mpg. I dont drive all highway either, I just dont floor it and waste gas.
 
  #25  
Old 08-19-2007 | 11:55 AM
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Originally Posted by Canadian
Damn, you must drive like a grandma. I've never seen higher than 18mpg with mostly city and some highway.
Not really. Almost every entrance ramp gets a 3rd gear blast, vacant side roads might get some fun on occasion, and often I manually shift 1 and 2 at WOT (up till about 5000rpms or so) to get on some main roads. On the highway, I usually go no faster than 78mph. I don't need tickets.
 
  #26  
Old 08-19-2007 | 11:56 AM
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Originally Posted by OCG35
Hell yes brother!!!!!!! I drive the hell out of my car and love kicking @ss all over cars like yours!!!! sooo fun! This really made me smile! litterally!
Talk is cheap when you have no 1/4 mile times
 
  #27  
Old 08-19-2007 | 12:33 PM
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From: pinellas county FLA, queens N.Y.
I Always Go To Sunoco Fill Up On 93 For About 60 - 65 Dollars .. Lately ..

F*** It .. Its For The Good Of The Car ..

And My Heavy Foot . Lol
 
  #28  
Old 08-19-2007 | 01:24 PM
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Originally Posted by DaveB
Talk is cheap when you have no 1/4 mile times
huh?... I have no 1/4 times?... do some searches - and you know I've challenged you to race before... I know, I know too far, blah, blah... DaveB you know my car would completely smoke your car. It wouldn't even be a contest. End of story.

I suppose somehow your going to try on convince (whoever will listen) that you're the one guy that will beat my car

Oh btw – I have better than “1/4 times in my sig”… let your fingers do some typing and find the vids…
 
  #29  
Old 08-19-2007 | 01:32 PM
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I do alot of highway driving for a living. My 05 at sedan gets anywhere from 360-400miles per tank depending on my driving style. I've only gotten 400 miles 5 or 6 times and the fuel light was on for about 20 miles. I notice if I do alot of city driving, I always get less than 360 miles per tank.
 
  #30  
Old 08-19-2007 | 02:08 PM
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I've had my 03 sedan for about 2 months now and I average about 18-24mpg. It just depends on how I drive her. Its tough not to drop gear and go sometimes but if I take it easy I go 330-340 before the fill up light turns on.
I have a love and hate feeling about that light though. Its way on the conservetive side. I have never in these 2 months been able to pump more than 14.5gallons of gas in my car without the gas spilling out. I thought it might be the valve thingy in the nossel but that checked out ok.
I think I would preffer that the light come on with 2gal vs 5 though. These are just my experiences with fill up done soon after light comes on and doing the math from there.
P.S. I also live in a very flat part of this country
 


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