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

Premium gas??

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Old Jun 26, 2007 | 11:31 PM
  #31  
dp_PRIME's Avatar
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Originally Posted by redlude97
So lets say it makes a 1% difference, that equates to 3hp, so $2 can buy you 3hp, thats the cheapest hp you are going to get. An exhaust that costs $700+ might get you 5-10hp, thats enough of a difference for me, why are you on an enthusiast site if perfomance isn't a concern? Thats assuming the difference is only 1%, I've seen number closer to 5% so you could lose as much as 15hp so save a whopping $100 a year.

I still use premium bro, i'm just tellin' the kid if he really wants to use plus, it's his perogative. If you put Plus in ur tank it doesn't decrease your HP, it just requires a little more out of your car to reach a certain point whether that be a certain speed/rpm/or certain "pull", but not by that much, i wish engineering worked out in perfect numbers like that. Premium and Plus only differs in levels of Toluene, nothing else really, thus with Plus u have lower toluene concentration so it takes more out of ur car (gas in particular) to reach that certain point. Hey i still use premium and if there isn't a difference between the price i say use premium, but to each his own.
 
Old Jun 26, 2007 | 11:32 PM
  #32  
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Originally Posted by aHero4Eternity
yeh, a lotta people here use it every 10k-15k miles.


That stuff is amazing. Yea i'm the same way i use it every 10k.
 
Old Jun 27, 2007 | 12:08 AM
  #33  
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I just used that BG44k stuff in my car @ 50K miles and I didn't see a difference in gas mileage. Maybe, I had no buildup?
Any how, gas is getting expensive. Instead of putting lower grade gasoline in my car, I would try to get the most out of the gasoline which goes in there. Such as injector cleaner, clean air filter, good tire press., changing gears @ lower rpms, using the a/c when absolutely necessary, avoid keeping the car @ idle for a long time (sitting in a parking lot with the car on for 30 mins).
 
Old Jun 27, 2007 | 07:13 AM
  #34  
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have you done the real difference between regular and premium per year? not that much.
 
Old Jun 27, 2007 | 10:38 AM
  #35  
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gas is going down here... in the G's, the max tire pressure is 51psi i think.. that means, you all should really keep your tires at 46. thats to get the best mileage. alot of people dont know it, but underinflated tires KILL your mileage. also, its more efficient to run with windows down 45mph or slower, and AC on 46 and up. take all the **** out of your car that you dont need. FOR EXAMPLE. for us who have rims bigger than 18 inches, take the spare tire out. you wont be using it anyhow..for me, i took the golf clubs out. see what you can spare your G
 
Old Jun 27, 2007 | 01:13 PM
  #36  
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Originally Posted by express705
gas is going down here... in the G's, the max tire pressure is 51psi i think.. that means, you all should really keep your tires at 46. thats to get the best mileage. alot of people dont know it, but underinflated tires KILL your mileage. also, its more efficient to run with windows down 45mph or slower, and AC on 46 and up. take all the **** out of your car that you dont need. FOR EXAMPLE. for us who have rims bigger than 18 inches, take the spare tire out. you wont be using it anyhow..for me, i took the golf clubs out. see what you can spare your G
If you increase your tire pressure, you MAY get better gas mileage but you WILL increase the uneven wear on your tires, you are just trading one cost for another. Why would you take the spare out? It still works whether your car has 17's, or 20's as long as you don't have an aftermarket BBK, you are fine
 
Old Jun 27, 2007 | 01:35 PM
  #37  
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20 cents a gallon difference isn't that different, percentage wise, with $3 gas than with $1 gas

After my last tire rotation, they over inflated my tires to 41psi. I didn't notice for the first 2000 miles of my vacation, and when I reduced it, my average mpg dropped 1-2.
 
Old Jun 27, 2007 | 02:15 PM
  #38  
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Originally Posted by redlude97
10.3:1 isn't high enough to necessitate premium, maybe you should some more reading. The ECU pulls timing when the knock sensor detects pinging from lower octane gas, thus you will lose performance with lower octane gas, there are dyno's around somewhere that show this as well
bingo, thread shoulda been closed right then
 
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