Is every one using 91 octan fuel

Mt Tam I am · 11-19-2010, 10:13 PM

91 every time.

AllForTheCash · 11-21-2010, 12:21 PM

91 or higher!

npdabest · 11-21-2010, 05:19 PM

I used 93 at Sunoco for the longest time and just recently started with V-Power at Shell. V-Power is also rated 93.

I'm sticking with Shell..it might be just me but it feels like I get better performance.

Now I want to try gas with no ethanol..not sure if such a place exists in Delaware or South Jersey. I assume a stock Z can use it without any changes.

Rob · 11-21-2010, 06:04 PM

Husky nearby me has 87 and then 94 : /
So I looked in the manual and it says the recommended is 91, putting 94 isn't gonna benefit me in anyway. So, I usually fill up 1/2 tank 94, then come back in a couple of days and fill up 1/4 tank 87. Manual says it's ok...

FERRARI · 11-21-2010, 06:14 PM

Quote:

Originally Posted by Rob

Husky nearby me has 87 and then 94 : /
So I looked in the manual and it says the recommended is 91, putting 94 isn't gonna benefit me in anyway. So, I usually fill up 1/2 tank 94, then come back in a couple of days and fill up 1/4 tank 87. Manual says it's ok...

If your can get NO ETHANOL GAS in your area you will notice a big difference

ChrisSlicks · 11-21-2010, 06:18 PM

Quote:

Originally Posted by Rob

Husky nearby me has 87 and then 94 : /
So I looked in the manual and it says the recommended is 91, putting 94 isn't gonna benefit me in anyway. So, I usually fill up 1/2 tank 94, then come back in a couple of days and fill up 1/4 tank 87. Manual says it's ok...

You can get a slight benefit from the higher octanes as the ECU continues to advance timing until it detects knock, the difference is slight however.

Rob · 11-21-2010, 07:49 PM

^ Of course, it will make some difference, nothing noticeable however... If I can cheat and save a couple bucks once in a while, won't hurt the car, as long as I'm not running only/or majority 87 I'll be fine I reckon.

Quote:

If your can get NO ETHANOL GAS in your area you will notice a big difference

I wish there was pure fuel around here, but I don't think there is... I'd for sure try it. Can you notice the difference in just normal day to day driving? Does it burn faster or is there no change in that?

FERRARI · 11-21-2010, 08:30 PM

Quote:

Originally Posted by Rob

^ Of course, it will make some difference, nothing noticeable however... If I can cheat and save a couple bucks once in a while, won't hurt the car, as long as I'm not running only/or majority 87 I'll be fine I reckon.

I wish there was pure fuel around here, but I don't think there is... I'd for sure try it. Can you notice the difference in just normal day to day driving? Does it burn faster or is there no change in that?

OMG! the difference is more than you would believe......and you get more Miles Per Gallon.......

KillerBee370 · 11-21-2010, 09:13 PM

I just piss in my tank after a night of drinking and this happens...

ImportConvert · 11-24-2010, 08:58 PM

Quote:

Originally Posted by ChrisSlicks

You can get a slight benefit from the higher octanes as the ECU continues to advance timing until it detects knock, the difference is slight however.

Really? I have NEVER heard of a vehicle that does this. There are set values in the PCM that it will advance to, and that's it--in every car I am aware--except the Z?

ChrisSlicks · 11-24-2010, 09:13 PM

Quote:

Originally Posted by ImportConvert

Really? I have NEVER heard of a vehicle that does this. There are set values in the PCM that it will advance to, and that's it--in every car I am aware--except the Z?

There are of course finite limits programmed, they are not infinite. But in general the VQ's are allowed to use very aggressive timing out of the box, and mostly run with timing retarded below maximum values unless all conditions are perfect.

The BlueMax · 11-25-2010, 04:53 PM

We use reformulated gas in our state which uses more alcohol, one station attendent told me that plus and premiem were about the same or if you mix regular with premiem 50/50 it comes out to 90% premiem. All I know is with my GM LT1 5.7 liter I can run regular and hardly notice the difference due to V8s massive low end torque. In the Z the engine is more like a motorcycle very little low end torque and I noticed a real drop off in performance, so I just run 93 octane.

crash1369 · 11-21-2010, 08:23 PM

Are you really that desperate to save $2.00?!? I would be wiling to bet you don't need that candy bar anyway

areyouin729 · 11-22-2010, 11:00 AM

Quote:

Originally Posted by crash1369

Are you really that desperate to save $2.00?!? I would be wiling to bet you don't need that candy bar anyway

seriously, why did you even buy a Z?

kenchan · 11-22-2010, 11:37 AM

Quote:

Originally Posted by areyouin729

seriously, why did you even buy a Z?

some of you folks are werd.

11-19-2010, 10:13 PM	#1 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	91 every time. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

11-21-2010, 12:21 PM	#2 (permalink)
AllForTheCash Enthusiast Member Join Date: Sep 2010 Location: NJ Posts: 385 Drives: 370z Rep Power: 16	91 or higher! __________________ 2010 370z Brilliant Silver/Frost - Touring - Sport - Navigation - 6MT

11-21-2010, 05:19 PM	#3 (permalink)
npdabest Base Member Join Date: Jul 2010 Location: delaware Posts: 73 Drives: 09 MB 370z Rep Power: 16	I used 93 at Sunoco for the longest time and just recently started with V-Power at Shell. V-Power is also rated 93. I'm sticking with Shell..it might be just me but it feels like I get better performance. Now I want to try gas with no ethanol..not sure if such a place exists in Delaware or South Jersey. I assume a stock Z can use it without any changes. Last edited by npdabest; 11-21-2010 at 05:21 PM.

11-25-2010, 04:53 PM	#12 (permalink)
The BlueMax Enthusiast Member Join Date: Jan 2010 Location: Louisville Posts: 337 Drives: 09 370/97 T/A 01 ZRX Rep Power: 27	We use reformulated gas in our state which uses more alcohol, one station attendent told me that plus and premiem were about the same or if you mix regular with premiem 50/50 it comes out to 90% premiem. All I know is with my GM LT1 5.7 liter I can run regular and hardly notice the difference due to V8s massive low end torque. In the Z the engine is more like a motorcycle very little low end torque and I noticed a real drop off in performance, so I just run 93 octane. __________________ The Blue Max

11-21-2010, 08:23 PM	#13 (permalink)
crash1369 Enthusiast Member Join Date: Nov 2010 Location: Tobyharlem Age: 43 Posts: 474 Drives: C300 - 6spd Rep Power: 730	Are you really that desperate to save $2.00?!? I would be wiling to bet you don't need that candy bar anyway __________________ "At no point during your rambling, incoherent response did you ever come close to anything that could be considered a rational thought. We are all now dumber for having listened to it. I award you no points, and may god have mercy on your soul."

11-21-2010, 06:04 PM	#4 (permalink)
Rob Base Member Join Date: Jul 2010 Location: BC Posts: 3 Drives: 09 370z Rep Power: 16	Husky nearby me has 87 and then 94 : / So I looked in the manual and it says the recommended is 91, putting 94 isn't gonna benefit me in anyway. So, I usually fill up 1/2 tank 94, then come back in a couple of days and fill up 1/4 tank 87. Manual says it's ok...

11-21-2010, 09:13 PM	#9 (permalink)
KillerBee370 A True Z Fanatic Join Date: Mar 2009 Location: So Cal baby! Age: 53 Posts: 5,964 Drives: with passion Rep Power: 323	I just piss in my tank after a night of drinking and this happens...

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