89 92?

Does your mpg get affected?

Has anyone done 87?

 

Use the highest.
It's not a mileage issue, it's to avoid early combustion which may retard timing and cause knocking, valves-tapping, etc.

2004 G35C 6MT + Nav, Silverstone

 

I use Sunoco 94 ultra and wouldnt put anything less than 93 in my G. Dont cheap out on the G if thats the case get a Honda.

03 6mt black/black
Ztube JWT PopCharger

 

When I bought my coupe, I asked the same qustion. My salesperson told me, in a low-whispered voice, "Don't even "F" with the gas. Run Super Unleaded, all of the time!

2003-G35C-5AT Laser Red/Black/Prem/XM/Tint/Chrome 17's/Black Badged

 

76 91 octane, the best you can buy around here. =\

Black / Black 2004 GcoupeMT. Premium. Splash Guardz.

 

use ONLY 91 or Higher!! By the way, where is there a Sunoco in Southern Cali?

 

use ONLY 91 or Higher!! By the way, where is there a Sunoco in Southern Cali?

 

I want 94 octane for my G too!!

 

94?!

wow

I've never seen that high. I've seen 91 at 76, but 0_0

 

only 76's 91 octane in my car.

 

i am in canada vancouver..
i put in 94 for most time..
some time 91 or 92 when gas price is high!
currently 91 is $1 CAN a liter
is killin me!
so it cost me around $45 US to full up my tank

 

I always use 93...that's the highest here (charlotte,nc)

 

Chevron Supreme with Techron 93
My parents own a gas station so its FREE

 

i put the highest in my car. i think its 93. gas is so expensive, and its only supposed to go higher.

[ 2004 G35 coupe ] - | 6MT | Black/Graphite | Premium |

 

i put only sunoco super unleaded (94) in mine. But i also put a bottle of octane booster in as well to raise it to 104! and each bottle is only $3 !! i highly recommend it.

04 6MT Black on Black
Premium
Aero
Winter
Injen CAI
Unorthodox Pulleys