- #21 of 392
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Knocktane...
by joeshan
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Jul 12, 2005 (10:33 am)
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I use 93, usually Sunoco, Amoco, or Mobil. I get a litle pinging ocasionally, so I'll mention that to service rep at next oil change.
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- #22 of 392
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Re: Knocktane... [joeshan]
by mnrep2
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Jul 12, 2005 (11:54 am)
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Replying to: joeshan (Jul 12, 2005 10:33 am)
On my 2005 G35x, the owners manual calls for 87 octane as standard..... 
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- #23 of 392
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Re: Premium necessary? [larryallen707]
by lmacmil
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Jul 12, 2005 (4:48 pm)
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Replying to: larryallen707 (Jul 12, 2005 6:12 am)
With computer controlled ignition, I think most cars these days will run fine on regular with reduced performance (and perhaps gas mileage.) On the gas cap of my son's Maxima it says "use premium for best performance" or words to that effect.
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- #24 of 392
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1500 mile road trip
by whittonm
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Jul 20, 2005 (8:26 am)
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2004 G35X, auto, loaded. 1500 mile interstate trip with about 800 pound load including passengers. Mileage ranged from 23.5 mpg at high speed (75+ mph) in hot climates (90-100 F) to 25.5 mpg at moderate speed (60-70 mph) in not so hot climate (80-95 F). MPG reported by Infiniti nav system. 
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- #25 of 392
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Re: 1500 mile road trip [whittonm]
by toddos35
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Aug 01, 2005 (4:16 pm)
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Replying to: whittonm (Jul 20, 2005 8:26 am)
How accurate have y'all found the nav system information to be? Especially with average gas mileage? And how long are the "intervals" it shows on the graph?
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- #26 of 392
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Re: 1500 mile road trip [toddos35]
by whittonm
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Aug 02, 2005 (5:08 am)
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Replying to: toddos35 (Aug 01, 2005 4:16 pm)
I have not checked the nav system accuracy. The intervals are user-settable
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- #27 of 392
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Re: 1500 mile road trip [whittonm]
by mike048
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Aug 02, 2005 (8:30 am)
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Replying to: whittonm (Aug 02, 2005 5:08 am)
I have an 05 G35X with 6,000 miles. I check my gas mileage the old fashioned way - zero out the trip meter at fill up -- dividing miles driven, by gallons filled, with a calculator, and the best I get is 15.9 with city driving. 18 mpg with mixed driving -- and 21 on highway exclusively at about 80 mph. Very disappointing! I wonder if the NAV systems are letting us down easy.
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- #28 of 392
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Re: 1500 mile road trip [mike048]
by esfoad
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Aug 02, 2005 (11:21 am)
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Replying to: mike048 (Aug 02, 2005 8:30 am)
I also do the calculations the old fashioned way on my 05 G35X with 9000 miles on her. So far, I'm getting 18.5 to 20 in mixed driving and about 23 on the highway at 75-80mph. I'm not disappointed since it's in the range of the EPA sticker.
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- #29 of 392
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Re: 1500 mile road trip [esfoad]
by larryallen707
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Aug 02, 2005 (1:16 pm)
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Replying to: esfoad (Aug 02, 2005 11:21 am)
I drive my coupe sort of hard but am getting only about 16-18 (old fashion calculation) on mixed highway/city driving... but more highway than city! Less than I would like but still love the car!
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- #30 of 392
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Re: 1500 mile road trip [esfoad]
by mike048
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Aug 02, 2005 (3:27 pm)
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Replying to: esfoad (Aug 02, 2005 11:21 am)
Esfoad, I'd be happy getting what you're getting. Did your mileage get better as your car gained miles or am I doing something wrong - or should I bring it in?
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