I normally use Chevron but I used SHELL last night and...
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From: MA
no one uses sunoco 94? I avg 21.5 (mostly hi way) but just put in K&N and saw a it jump up to 23 (mixed driving) anyone had the same experience with K&N's in there Z's? with my other cars shell gas usually did give better mpg...but not as much "uuumph?"
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From: Denver, CO
FYI, Using "race gas" won't help the performance of your car. In fact the higher octane will inhibit the burning of fuel in your cylinders causing you to loose power. The high level of octane in race gas is to help prevent predetonation in engines that are seceptable to it like forced induction or ultra-high compression engines.
Originally posted by overlord tom
When I feel spunky I slap a few gallons in before a fill-up for a weekend cruise. Car runs way better. Don't know if it's worth the $4.79 a gallon though. I'd say it is equal to eating at Outback vs Carls Jr. Both will fill you up with meat and do the job. Only one feels right and is worth 5x the price during times you want to spoil yourself.
When I feel spunky I slap a few gallons in before a fill-up for a weekend cruise. Car runs way better. Don't know if it's worth the $4.79 a gallon though. I'd say it is equal to eating at Outback vs Carls Jr. Both will fill you up with meat and do the job. Only one feels right and is worth 5x the price during times you want to spoil yourself.
Originally posted by bshockley
Not to try and burst your bubble or anything, but maybe one way was uphill mostly and the other was down hill. I.E. you drove up into the mountains one way, filled up, then drove back down them (extreme example).
I've done it before, driving from KC to Denver, filled up twice, driving back made it with about 1.5 tanks.
I have only filled my Z twice so far, the last time being Shell. I'll figure it's gas milage next fill up.
Not to try and burst your bubble or anything, but maybe one way was uphill mostly and the other was down hill. I.E. you drove up into the mountains one way, filled up, then drove back down them (extreme example).
I've done it before, driving from KC to Denver, filled up twice, driving back made it with about 1.5 tanks.
I have only filled my Z twice so far, the last time being Shell. I'll figure it's gas milage next fill up.
they way back was UP HILL...
Funny you say that. Talked to a client who has a shell station and I ALWAYS use Chevron. But you just valedated some of the things he said. I will be trying there gas next. As far as Texaco dont try them because shell just bought.
As far as K&N it made a considerable difference in my old MAX. Gained over 30 miles to the tank! But amd worried about it damaging the Z. Read a thread about how the oild on it can do serious damage to the Z.
in CA we don't have 93 oct gas
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From: Novi, MI
Originally posted by SlamMan
FYI, Using "race gas" won't help the performance of your car. In fact the higher octane will inhibit the burning of fuel in your cylinders causing you to loose power. The high level of octane in race gas is to help prevent predetonation in engines that are seceptable to it like forced induction or ultra-high compression engines.
FYI, Using "race gas" won't help the performance of your car. In fact the higher octane will inhibit the burning of fuel in your cylinders causing you to loose power. The high level of octane in race gas is to help prevent predetonation in engines that are seceptable to it like forced induction or ultra-high compression engines.
An interesting side note: slower burning fuels are actually more powerful. Nitromethane burns incredibly slow compared to gasoline. But the drag-racers still use it. Why? Because Nitromethane burns so slow, it continuously drives the piston down during the entire power stroke instead of the quick "bang" of gasoline. In fact, the nitro is still burning when the piston is on the exhaust stroke!! This burning mess is then pushed out through the exhaust...that's why nitro funny cars have flames shooting out the exhaust pipes: it's really fuel that is still burning from the power stroke!!
I use Turbo Blue (100 octane) whenever I'm going to be beating on it hard (like a race track) or in high heat/humidity. The idea is to keep the knock sensor at bay.
KONVERTER: thanks for making this post! I was wondering what was going on a few weeks ago when I got 31.2 MPG on the way home (normally it's 28.5 MPG)!!! ...I stopped at a Shell station that time...hmmm. Normally, I fill up using SUNOCO 94 Ultra...no problems with it otherwise.
Last edited by archman350z; Oct 12, 2003 at 06:23 PM.
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From: ATX
Originally posted by EnthuZiast
Funny you say that. Talked to a client who has a shell station and I ALWAYS use Chevron. But you just valedated some of the things he said. I will be trying there gas next. As far as Texaco dont try them because shell just bought.
Funny you say that. Talked to a client who has a shell station and I ALWAYS use Chevron. But you just valedated some of the things he said. I will be trying there gas next. As far as Texaco dont try them because shell just bought.
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From: Denver, CO
Originally posted by archman350z
Umm, you're wrong on this one. For most cars, yes, but the Z, no. SportCompactCar did a dyno pull with 100 octane race-gas and found the Z made an additional 5HP (in pure-stock form). The reason being that the ECU controls the timing advance based on feedback from the knock sensor.
Umm, you're wrong on this one. For most cars, yes, but the Z, no. SportCompactCar did a dyno pull with 100 octane race-gas and found the Z made an additional 5HP (in pure-stock form). The reason being that the ECU controls the timing advance based on feedback from the knock sensor.
Thats pretty interesting info. Do you happen to know what issue of SCC that was in.
Originally posted by Zilverb@ck
Actually, Chevron, Texaco, and Shell are all the same. They are all owned by the same people. It is what is put in the gas afterwards that makes it good gas. ANd Exxon and Mobil are owned by the same people too. Just an FYI
Actually, Chevron, Texaco, and Shell are all the same. They are all owned by the same people. It is what is put in the gas afterwards that makes it good gas. ANd Exxon and Mobil are owned by the same people too. Just an FYI
really all gass is the same when you think about it...
it all ocmes off the same tankers...
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From: Los Gatos, CA
Hmm...Filled up with Shell today, normally use chevron. 91 octane.
Average mpg b4 fill up: 18.2
Average mpg after fill up and a day of driving, Still 18.2
Although, recently my ave mpg has been dropping very very fast (I can redline the car now
) But it stayed the same all day.
Hmmmmm
Average mpg b4 fill up: 18.2
Average mpg after fill up and a day of driving, Still 18.2
Although, recently my ave mpg has been dropping very very fast (I can redline the car now
) But it stayed the same all day.Hmmmmm
Originally posted by Jsn350Z
Hmm...Filled up with Shell today, normally use chevron. 91 octane.
Average mpg b4 fill up: 18.2
Average mpg after fill up and a day of driving, Still 18.2
Although, recently my ave mpg has been dropping very very fast (I can redline the car now ) But it stayed the same all day.
Hmmmmm
Hmm...Filled up with Shell today, normally use chevron. 91 octane.
Average mpg b4 fill up: 18.2
Average mpg after fill up and a day of driving, Still 18.2
Although, recently my ave mpg has been dropping very very fast (I can redline the car now
) But it stayed the same all day.Hmmmmm
did you reset your meeter...
because if you just left it then it would have been figuring the new MPG with the old... and if you had 500 miles at 18.2MPG then you wouldnt start seeing a difference till you went another few hundred miles...
remember its AVERAGE not real time MPG
its the thing im wearing in my sic / avaiter...
http://x.oakley.com/catalog/display/...dark_brown/s_m
http://x.oakley.com/catalog/display/...dark_brown/s_m
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From: Maryland
Originally posted by archman350z
Umm, you're wrong on this one. For most cars, yes, but the Z, no. SportCompactCar did a dyno pull with 100 octane race-gas and found the Z made an additional 5HP (in pure-stock form). The reason being that the ECU controls the timing advance based on feedback from the knock sensor. You are correct in that higher octane fuels burn slower, but they also burn more consistently (less impurities that may burn faster)...that is why they don't knock as much.
An interesting side note: slower burning fuels are actually more powerful. Nitromethane burns incredibly slow compared to gasoline. But the drag-racers still use it. Why? Because Nitromethane burns so slow, it continuously drives the piston down during the entire power stroke instead of the quick "bang" of gasoline. In fact, the nitro is still burning when the piston is on the exhaust stroke!! This burning mess is then pushed out through the exhaust...that's why nitro funny cars have flames shooting out the exhaust pipes: it's really fuel that is still burning from the power stroke!!
I use Turbo Blue (100 octane) whenever I'm going to be beating on it hard (like a race track) or in high heat/humidity. The idea is to keep the knock sensor at bay.
KONVERTER: thanks for making this post! I was wondering what was going on a few weeks ago when I got 31.2 MPG on the way home (normally it's 28.5 MPG)!!! ...I stopped at a Shell station that time...hmmm. Normally, I fill up using SUNOCO 94 Ultra...no problems with it otherwise.
Umm, you're wrong on this one. For most cars, yes, but the Z, no. SportCompactCar did a dyno pull with 100 octane race-gas and found the Z made an additional 5HP (in pure-stock form). The reason being that the ECU controls the timing advance based on feedback from the knock sensor. You are correct in that higher octane fuels burn slower, but they also burn more consistently (less impurities that may burn faster)...that is why they don't knock as much.
An interesting side note: slower burning fuels are actually more powerful. Nitromethane burns incredibly slow compared to gasoline. But the drag-racers still use it. Why? Because Nitromethane burns so slow, it continuously drives the piston down during the entire power stroke instead of the quick "bang" of gasoline. In fact, the nitro is still burning when the piston is on the exhaust stroke!! This burning mess is then pushed out through the exhaust...that's why nitro funny cars have flames shooting out the exhaust pipes: it's really fuel that is still burning from the power stroke!!
I use Turbo Blue (100 octane) whenever I'm going to be beating on it hard (like a race track) or in high heat/humidity. The idea is to keep the knock sensor at bay.
KONVERTER: thanks for making this post! I was wondering what was going on a few weeks ago when I got 31.2 MPG on the way home (normally it's 28.5 MPG)!!! ...I stopped at a Shell station that time...hmmm. Normally, I fill up using SUNOCO 94 Ultra...no problems with it otherwise.
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From: Houston, TX
Originally posted by Zilverb@ck
Actually, Chevron, Texaco, and Shell are all the same. They are all owned by the same people. It is what is put in the gas afterwards that makes it good gas. ANd Exxon and Mobil are owned by the same people too. Just an FYI
Actually, Chevron, Texaco, and Shell are all the same. They are all owned by the same people. It is what is put in the gas afterwards that makes it good gas. ANd Exxon and Mobil are owned by the same people too. Just an FYI
Also, remember to never get gas when the tanker truck is filling the tanks.