timc00k

iTrader: (5)

I believe the G37 manual recommends 93 octane?

Can I get away with 89 octane? Not 87 but 89 octane.

Ricio1991

I would stay 91 or higher since it's considered premium, depends what your state offers, some states carry only up to 91 but it's fine.

Epiphany

Depends on your altitude and driving. 3000+ feet above sea level 93 is only needed when FI really. If you live near sea level, and take your engine above 3000rpm or something just put the premium in it.

kennyz424

iTrader: (147)

Here ya go... pages and pages of information and feedback

https://www.myg37.com/forums/g37-sed...1-or-93-a.html

kennyz424

iTrader: (147)

And 4.18 a gallon for 89 octane?! Please tell me that's an old picture lol

timc00k

iTrader: (5)

Hahaha yes, this is from google images so most likely an old picture.

hobbs

evil-G-nius

iTrader: (1)

OR this high

telcoman

I've been getting away with 87 Octane for more then 10 years. I'm on my second Infiniti
171796 miles on my first, pretty much all on 87 octane except for one month tests of 91 and 93. MPG dropped on both and never went back to anything other than 87 octane



Telcoman

Vizard_87

iTrader: (13)

My gas cap says premium so I use nothing but 93 on mine (since day 1). Just a year ago 93 was almost $4 now it's $2.30 here so why not!?

Also, similar thread with 6 pages on related subject https://www.myg37.com/forums/g37-sed...1-or-93-a.html

VaderK52

iTrader: (1)

Ive ran 89 through mine for 2 months at a time then go back to 93 for 2-3, rinse and repeat if i feel like it.

steez

Wow -- MPG dropped when moving from 87 to 91/93??
All I've ever used is 93 on every car I've owned.

evil-G-nius

iTrader: (1)

I would use 93...if Cali would get off its @SS and get some firewater instead of this 91 octane brita filtered crap! LoL

Sig6MT

The owner's guide for my 2013 G37 6MT indicates that 93 Octane is required.

We could use 87 or 89 octane and the computer will adjust timing, etc to compensate. However, performance will suffer. Not clear about impacts on longevity, gas mileage, or emission control system. I would only do this in case of emergency, to also avoid risking issues with these new sensitive engines.

Requiring 93 octane is very different from my two Maximas where 93 was recommended. I used regular without any problem. I do take good care of our cars and logged over 300,000 on one of those Maximas.

Hope this helps

Selym

This is verbatim from the Owner's Manual. In other words, use fuel with an AKI less than 91 only in emergencies.

To the naysayers: why do you think Nissan insists on premium fuel? Do you think they're colluding with gasoline retailers to get more of your hard-earned money?