Ok thanks but its a auto. I'm still getting use to a car with so much power. car before this was a 1997 infiniti i30 with 190 hp and no get up but it got 22mpg so getting 17 is a shock to my wallet lol

 

Hey,
How do I reset the ECU?:hello:

 

lots of freeway, not a lot of stoplight driving. i noticed that the stoplight to stoplight stuff takes away gas pretty quickly haha these cars do pretty well on the freeway in 6th gear tho if i do all freeway driving i can get 24-27mpg but thats rare

 

Here, let me Google that for you.

 

I am going to try to driver nicer so i can get at least 19+ mpg.

 

vs. meaner?

 

there is a DIY to clean the sensor for the sending units in the gas tank, type in "gas gauge weirdness" in the search

 

i always fill about 17 gallons

 

two ways:

https://g35driver.com/forums/engine-...resetting.html

or just disconnect your negative battery terminal for 30 mins

 

'04 auto w/ 99k. From empty, ive never filled up more than 17.4 gal. I must be getting around 18-20mpg average. my driver side window is malfunctioning so i have an awkward air draft. + a warped hood. sucks.

 

I have a 05 coupe 5at with 125K. I always run 35psi with premium gas and been getting 18mpg from 90-120K running 40 weight oils (rotella 5w-40: 7k oci or Pennzoil HM 10w-40: 5k oci). After changing the PCV valve and seeing it a little clogged I changed it to another oem one. Last 5k I've been getting around 20-22mpg depending on driving style. On a RX350 with 96K I went from 17.5 to 22.1mpg after changing the pcv vale after about 1k miles. I plan on doing it on all my cars every 50-60K. On the G35, don't even bother taking off the engine cover, you can change it without removing it. If you time yourself, it probably would take literally two minutes to change it.

 

that sounds about rite gettin 19-20 mpg. i get that all the time

 

Mine took 16.3 gallons yesterday after the gas light came on. Cost me 68$ and for the lazy, that's about $4.20 a gallon. I'm sure it will hit $5 by mid summer.

 

Damn man! $4.20! the Chicago suburbs are still around $3.20-3.40 /gal 93 oct. I thought that was bad...

 

So it doesn't hurt my wallet i usually put gas after i have a 1/4 tank left...