why use high octane in 97 se?
Just bought a 1997 se and don't have an owners manual do I have to use high octane in my max at all times. Also why is it that I can roll my windows down with my keyless entry but cannot figure out how to put them back up with the remote, is it possible. Happy to say that I just did my first mod CLEAR bumper lenses man what a diff.....really like wicked's grills those are really nice anyone know where you can get those cheaper then godfathercustoms.com..........thanks
Yes 92+ octane is required for all Maxima's from at least 95 and up, maybe even 92-94 SEs also. You could put a lower grade in but the car has a knock sensor that will retard performance of the car, and people have been known to have smog problems if they use lower octane.
As for rolling the windows up with keyless, there is currently no way to fix this, it only allows us to roll them down. We are waiting for instructions from another member who said his dad wired the window so that when you lock the car the windows rolled up also, but we don't know when they will be available.
As for rolling the windows up with keyless, there is currently no way to fix this, it only allows us to roll them down. We are waiting for instructions from another member who said his dad wired the window so that when you lock the car the windows rolled up also, but we don't know when they will be available.
Originally posted by Adidas_Boy
Yes 92+ octane is required for all Maxima's from at least 95 and up, maybe even 92-94 SEs also. You could put a lower grade in but the car has a knock sensor that will retard performance of the car, and people have been known to have smog problems if they use lower octane.
As for rolling the windows up with keyless, there is currently no way to fix this, it only allows us to roll them down. We are waiting for instructions from another member who said his dad wired the window so that when you lock the car the windows rolled up also, but we don't know when they will be available.
Yes 92+ octane is required for all Maxima's from at least 95 and up, maybe even 92-94 SEs also. You could put a lower grade in but the car has a knock sensor that will retard performance of the car, and people have been known to have smog problems if they use lower octane.
As for rolling the windows up with keyless, there is currently no way to fix this, it only allows us to roll them down. We are waiting for instructions from another member who said his dad wired the window so that when you lock the car the windows rolled up also, but we don't know when they will be available.
and, no the VQ engine will NOT retard performance if you use lower than 92 octane.
Senior Member
Joined: Aug 2000
Posts: 2,835
Super unleaded is NOT required, despite what all the gearheads here will tell you. The owners manual recommends high octane gas. This allows maximum compression for maximum power. However, I would be surprised if using super vs. unleaded yielded any measurable (much less noticeable) difference in performance.
And for those people who say that they use super because it's worth the extra fuel economy, think about this: for me, regular is $1.89/gallon while super is $2.09/gallon. That's approximately 15% more to buy super unleaded. Do you really think super will give you 15% better fuel economy? We're talking 2-3 MPG here. I don't think so.
Personally, I use super unleaded in my car. That was the gas the engine was designed to run on, and well, it's for my peace of mind. However, I have used regular on occasion and did not notice any difference in performance or fuel economy.
So, in conclusion, use super if you want to, but you do not have to.
And for those people who say that they use super because it's worth the extra fuel economy, think about this: for me, regular is $1.89/gallon while super is $2.09/gallon. That's approximately 15% more to buy super unleaded. Do you really think super will give you 15% better fuel economy? We're talking 2-3 MPG here. I don't think so.
Personally, I use super unleaded in my car. That was the gas the engine was designed to run on, and well, it's for my peace of mind. However, I have used regular on occasion and did not notice any difference in performance or fuel economy.
So, in conclusion, use super if you want to, but you do not have to.
Senior Member
Joined: Feb 2001
Posts: 323
Gas
Originally posted by Eric L.
Super unleaded is NOT required, despite what all the gearheads here will tell you. The owners manual recommends high octane gas. This allows maximum compression for maximum power. However, I would be surprised if using super vs. unleaded yielded any measurable (much less noticeable) difference in performance.
And for those people who say that they use super because it's worth the extra fuel economy, think about this: for me, regular is $1.89/gallon while super is $2.09/gallon. That's approximately 15% more to buy super unleaded. Do you really think super will give you 15% better fuel economy? We're talking 2-3 MPG here. I don't think so.
Personally, I use super unleaded in my car. That was the gas the engine was designed to run on, and well, it's for my peace of mind. However, I have used regular on occasion and did not notice any difference in performance or fuel economy.
So, in conclusion, use super if you want to, but you do not have to.
Super unleaded is NOT required, despite what all the gearheads here will tell you. The owners manual recommends high octane gas. This allows maximum compression for maximum power. However, I would be surprised if using super vs. unleaded yielded any measurable (much less noticeable) difference in performance.
And for those people who say that they use super because it's worth the extra fuel economy, think about this: for me, regular is $1.89/gallon while super is $2.09/gallon. That's approximately 15% more to buy super unleaded. Do you really think super will give you 15% better fuel economy? We're talking 2-3 MPG here. I don't think so.
Personally, I use super unleaded in my car. That was the gas the engine was designed to run on, and well, it's for my peace of mind. However, I have used regular on occasion and did not notice any difference in performance or fuel economy.
So, in conclusion, use super if you want to, but you do not have to.
23.8 mpg yesterday
The missing moderator
Joined: Aug 2000
Posts: 2,019
Just wait till when it's about 100 degrees out side. Then running on 87 won't seem like such a good idea anymore.
-Shing
-Shing
Originally posted by BriGuyMax
Actually, Premium (92+) is not REQUIRED for 95-99 maxs...if you read the owners manual (and inside the fuel door), it's only RECOMMENDED for "best performance." Whatever that means. I have run both 87 and 93 in my car, and the only thing that I have concluded is that it seems to run smoother and get a little better gas mileage with premium...but it might just be in my head. So I always use premium for piece of mind.
and, no the VQ engine will NOT retard performance if you use lower than 92 octane.
Actually, Premium (92+) is not REQUIRED for 95-99 maxs...if you read the owners manual (and inside the fuel door), it's only RECOMMENDED for "best performance." Whatever that means. I have run both 87 and 93 in my car, and the only thing that I have concluded is that it seems to run smoother and get a little better gas mileage with premium...but it might just be in my head. So I always use premium for piece of mind.
and, no the VQ engine will NOT retard performance if you use lower than 92 octane.
Senior Member
Joined: Sep 2000
Posts: 4,601
Several posts in this thread mentioned Nissan recommending fuel with 92 Anti-Knock Index. My Owner's Manual calls for 91 AKI.
Most stations sell three grades of gasoline: 87, 89, and 93 AKI. I fill with equal amounts of 89 and 93. That's the economical way to buy 91 AKI.
Most stations sell three grades of gasoline: 87, 89, and 93 AKI. I fill with equal amounts of 89 and 93. That's the economical way to buy 91 AKI.
Not DAVEB the parts guy
Joined: Aug 2000
Posts: 8,549
My manual say 91. The highest I can get is 92.
Yes, running lower octane WILL decrease performance. Why? Because the Maxima has a 10:1 compression ratio motor which is considered high compression. High compression motors generate more cylinder heat due to the higher compression. Octane ratings on fuels are related to their ability to burn. Higher octane means a higher temp for burn. If you put 87-89 in the VQ and your motors hot, it will detonate. Detonation is when there is so much heat in the cylinder that the fuel ignites without a spark. This is very bad and can completely destroy the motor. How does the VQ compensate for this? The Knock Sensor. When the sensor hears the knock (detonation) it tells the ECU to pull the timing which then ultimately takes away power and mpg. Pulling out a lot of timing will really bog down the motor. Even on a hot day and running 91 octane, the VQ will show signs of detonation and reduce timing. Running 87 could really make things nasty.
Why do you guys think cars that have NOS, turbos, or SCs run super high octane? No, it's not to be cool, it's because these power adders generate massive cylinder pressure and heat. When you compress air, you generate heat.
Run what the manufactuer says to run. Don't run anything less unless you want worse performance at all levels.
Dave
Yes, running lower octane WILL decrease performance. Why? Because the Maxima has a 10:1 compression ratio motor which is considered high compression. High compression motors generate more cylinder heat due to the higher compression. Octane ratings on fuels are related to their ability to burn. Higher octane means a higher temp for burn. If you put 87-89 in the VQ and your motors hot, it will detonate. Detonation is when there is so much heat in the cylinder that the fuel ignites without a spark. This is very bad and can completely destroy the motor. How does the VQ compensate for this? The Knock Sensor. When the sensor hears the knock (detonation) it tells the ECU to pull the timing which then ultimately takes away power and mpg. Pulling out a lot of timing will really bog down the motor. Even on a hot day and running 91 octane, the VQ will show signs of detonation and reduce timing. Running 87 could really make things nasty.
Why do you guys think cars that have NOS, turbos, or SCs run super high octane? No, it's not to be cool, it's because these power adders generate massive cylinder pressure and heat. When you compress air, you generate heat.
Run what the manufactuer says to run. Don't run anything less unless you want worse performance at all levels.
Dave
In Cali, Premium is consistantly around $2/gallon. . . It gets higher towards the bigger cities, but you dn't hear about it until it reaches $2 in Chicago or a place like that. . . We get no love.
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