G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

Is there a really big difference in premium vs regular gas?

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  #151  
Old 04-24-2008, 02:58 PM
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it probaly wont..but ur only going to save a couple bucks!!
 
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Old 04-24-2008, 03:02 PM
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the guy at the shell station told me $.30 cents tomorrow..so Im like yeaaaah whatever..So, I called my buddy who works on the today show..sure as dog dookie..he confirmed the story that its going up .21 tomorrow.



Originally Posted by Philly's Finest
how did you find this out?
 
  #153  
Old 04-24-2008, 03:31 PM
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it's only save u a couple bucks.... but in the long run... you going to spend couple thousands to fix your problems.. so your CALL
 
  #154  
Old 04-24-2008, 03:32 PM
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Does it state somewhere that we *NEED* to use 92 + ?


Originally Posted by lov3rboy408
it's only save u a couple bucks.... but in the long run... you going to spend couple thousands to fix your problems.. so your CALL
 
  #155  
Old 04-24-2008, 03:36 PM
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Originally Posted by Herles(Jersey)
So, yeah...the crooks in the oil industry are banging us up $.21 cents tomorrow. So, this begs the question..can I put regular in without harming the engine? Im sure I may see a bit of a power depletion..but at $4.00 Fing dollars a gallon.. I need to start cutting costs...and 87 or 89 is the way I need to do it.

What do you guys think. Will I hurt anything by downgrading my octane??
You can run regular in it and the cars computer will adjust the timing to suit. But really there isn't a big cost difference in regular to Premium for each fill-up, why not use what is reccommended.

If you have to pinch your pennies that much it might be better to sell it and buy an econo-box.
 
  #156  
Old 04-24-2008, 03:36 PM
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open up you gas tank door... you'll see
 
  #157  
Old 04-24-2008, 03:39 PM
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^^^ +1000000000000000
 
  #158  
Old 04-24-2008, 03:55 PM
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Originally Posted by johniZzlee
stop being so cheap its a G not a freaking pinto
+1 put in 91 cheap bastards
 
  #159  
Old 04-24-2008, 04:05 PM
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How much harm to your engine is speculative. However, there is still harm being done. For instance, a higher performance engine requires the higher octane to properly run. If I remember correctly (this could be reverse) is that a higher octane gas discharges at higher temps. A higher performance engine is tuned to the higher temp discharge. Therefore, with lower octane fuel, the discharge occurs sooner causing misfires and knocking. I'm sure the control units in our cars are smart enough to compensate a little, but long term effects may not be good.

The reason why high octane gas is useless for say a 4 cyl Camry is because the engine never performs to that high level. It'll never hit the high heat situation to get the performance. This means that not all of the fuel is usually discharged. You have those extra octanes just being gassed out of your exhaust. Does it hurt, maybe. But probably not as much as using lower grade fuel for a higher performing car like the G. You're just polluting more I guess.

I also wondered about the entire debate about the same VQ engine being used for other cars like the Altima. They're 87 fuel friendly. And again, this has a lot to do with the tuning of the engine itself. I'm sure the timing and heat thresholds are adjusted accordingly to prevent misfires and knocking. Maybe the ECU could be re-written in the G to compensate for this. But it would be an unfortunate downgrade.
 
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Old 04-24-2008, 04:07 PM
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It was just a question out of curiosity. The difference in my fill up is going to be around 15 bucks from regular to super here in NJ..Filling up 3 times a week, its 45 bucks a week, or $180 a month....It adds up, which is why Im curious.



Originally Posted by GEE35X
You can run regular in it and the cars computer will adjust the timing to suit. But really there isn't a big cost difference in regular to Premium for each fill-up, why not use what is reccommended.

If you have to pinch your pennies that much it might be better to sell it and buy an econo-box.
 
  #161  
Old 04-24-2008, 04:19 PM
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Yeah, I hear ya..not worth it in the long run I guess...Ill stick with the 92-93 I get out here.

Thanks for the FYI

Originally Posted by overdrve
How much harm to your engine is speculative. However, there is still harm being done. For instance, a higher performance engine requires the higher octane to properly run. If I remember correctly (this could be reverse) is that a higher octane gas discharges at higher temps. A higher performance engine is tuned to the higher temp discharge. Therefore, with lower octane fuel, the discharge occurs sooner causing misfires and knocking. I'm sure the control units in our cars are smart enough to compensate a little, but long term effects may not be good.

The reason why high octane gas is useless for say a 4 cyl Camry is because the engine never performs to that high level. It'll never hit the high heat situation to get the performance. This means that not all of the fuel is usually discharged. You have those extra octanes just being gassed out of your exhaust. Does it hurt, maybe. But probably not as much as using lower grade fuel for a higher performing car like the G. You're just polluting more I guess.

I also wondered about the entire debate about the same VQ engine being used for other cars like the Altima. They're 87 fuel friendly. And again, this has a lot to do with the tuning of the engine itself. I'm sure the timing and heat thresholds are adjusted accordingly to prevent misfires and knocking. Maybe the ECU could be re-written in the G to compensate for this. But it would be an unfortunate downgrade.
 
  #162  
Old 04-24-2008, 04:29 PM
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Originally Posted by Herles(Jersey)
It was just a question out of curiosity. The difference in my fill up is going to be around 15 bucks from regular to super here in NJ..Filling up 3 times a week, its 45 bucks a week, or $180 a month....It adds up, which is why Im curious.
We pay more for fuel in Canada and the difference isn't that much. I'm curious, can you post the figures to show how you arrive at those figures.

You must rack up the miles to have to fill up your tank 3 times a week I know I could never afford to buy close to 60 US gallons of fuel per week.
 
  #163  
Old 04-24-2008, 04:54 PM
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i'd be happy with 4$/gallon, compared to 5.25$/gallon or so.
but yeah, with that much mileage, it had better at least be a tax deduction, i thought i was using a lot at a tank a week.
 
  #164  
Old 04-24-2008, 05:22 PM
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If you're filling up 3 times a week (which is a LOT of driving haha) you could probably make up the difference in changing your driving habits (especially for city driving) but then again that takes out all the fun of having a luxury sports car.
 
  #165  
Old 04-24-2008, 05:24 PM
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I don't know how you're paying $15 more per fill up?
 


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