Octane Level For Gas
#16
04-24-2008 | 05:50 AM
Originally Posted by Joe_Camel
I'm just saying, like BlueDevil, it's one thing to complain that gas is expensive, but it's ridiculous to think that switching to a lower octane to save $0.15 per gallon is going to make a significant impact.
I have absolutely no problem with someone saying "I only use premium because I get better mpg, and I prefer to use the best available for my car." But when people go so far as to say that the engine was only designed to run on premium (um, then why does the ECU have 5 maps to adjust for the different octane levels?), and the only reason the ECU will adjust for a lesser grade fuel is for emergency situations (then why doesn't the manual say "Only use non-premium fuel in emergencies"?).......that's stretching the truth a bit far.
Tell you what, I'll use my midgrade fuel and you use your premium fuel, and at the end of they year, I'm pretty sure both of our G35s will still be running just fine.
#17
04-25-2008 | 07:01 PM
Registered User
Joined: Jul 2006
Posts: 734
Likes: 1
From: Sunny CA
If you are going to question what the manufacturer sets as the recommended octane grade, why stop there?
Might as well question lubricant weights and grades, tire pressure settings, etc. etc. and everything else that's in the manual.
That's my only point. I don't care if folks put cat **** in their tank.
Might as well question lubricant weights and grades, tire pressure settings, etc. etc. and everything else that's in the manual.
That's my only point. I don't care if folks put cat **** in their tank.
#18
04-25-2008 | 07:31 PM
Originally Posted by GixxerSteve
Fair enough, but it's also ridiculous to think that paying an extra $0.15 per gallon is going to prevent the engine from suffering catestrophic failure. As I mentioned before, these cars are designed to run on grades of fuel other than premium.
I have absolutely no problem with someone saying "I only use premium because I get better mpg, and I prefer to use the best available for my car." But when people go so far as to say that the engine was only designed to run on premium (um, then why does the ECU have 5 maps to adjust for the different octane levels?), and the only reason the ECU will adjust for a lesser grade fuel is for emergency situations (then why doesn't the manual say "Only use non-premium fuel in emergencies"?).......that's stretching the truth a bit far.
Tell you what, I'll use my midgrade fuel and you use your premium fuel, and at the end of they year, I'm pretty sure both of our G35s will still be running just fine.
I have absolutely no problem with someone saying "I only use premium because I get better mpg, and I prefer to use the best available for my car." But when people go so far as to say that the engine was only designed to run on premium (um, then why does the ECU have 5 maps to adjust for the different octane levels?), and the only reason the ECU will adjust for a lesser grade fuel is for emergency situations (then why doesn't the manual say "Only use non-premium fuel in emergencies"?).......that's stretching the truth a bit far.
Tell you what, I'll use my midgrade fuel and you use your premium fuel, and at the end of they year, I'm pretty sure both of our G35s will still be running just fine.
#19
04-26-2008 | 02:04 PM
Registered User
Joined: Jul 2006
Posts: 734
Likes: 1
From: Sunny CA
Originally Posted by GixxerSteve
and the only reason the ECU will adjust for a lesser grade fuel is for emergency situations (then why doesn't the manual say "Only use non-premium fuel in emergencies"?).......that's stretching the truth a bit far.
#20
06-19-2008 | 11:02 AM
Registered User
Joined: Jun 2008
Posts: 6
Likes: 1
Implying the manual says it is okay for the Coupe to burn anything less than 91 octane on a regular basis would be stretching the truth. What it does say is quite the opposite.
This is what my 2007 Manual says: 87
FUEL RECOMMENDATION
INFINITI recommends the use of unleaded
premium gasoline with an octane rating of
at least 93 AKI (Anti-Knock Index) number
(Research octane number 98).
If unleaded premium gasoline is not available,
you may use unleaded regular gasoline
with an octane rating of at least 87
AKI number (Research octane number 91),
but you may notice a decrease in performance.
This is what my 2007 Manual says: 87
FUEL RECOMMENDATION
INFINITI recommends the use of unleaded
premium gasoline with an octane rating of
at least 93 AKI (Anti-Knock Index) number
(Research octane number 98).
If unleaded premium gasoline is not available,
you may use unleaded regular gasoline
with an octane rating of at least 87
AKI number (Research octane number 91),
but you may notice a decrease in performance.
#21
06-19-2008 | 12:54 PM
Guest
Posts: n/a
Originally Posted by GixxerSteve
I always enjoy reading people's comments that "oh, well its just another $2 to $3 to fill up with premium." If its really not a big deal guys, will you please send me that extra $3 a week you have burning a hole in your pocket?? If its not too much trouble, I'd sure appreciate it. 
I figure if I get enough people to donate their extra cash, I'll have enough to fill up for free.
I figure if I get enough people to donate their extra cash, I'll have enough to fill up for free.D
U
M
B
S
H
I
T
Thread
Thread Starter
Forum
Replies
Last Post
RemmyZero
V36 DIY
10
04-23-2018 11:13 AM
joel extreme
SOCAL Meetings & Events
0
09-29-2015 04:44 AM
Hogbone
Engine, Drivetrain & Forced-Induction
2
09-28-2015 06:44 PM