Gas, which one?

Rusty · 03-12-2020, 10:12 PM

Quote:

Originally Posted by vtec to vvel

Can these be bought at Home Depot?

On-line. We sell just about everything.

bunk · 03-12-2020, 01:49 PM

Quote:

Originally Posted by Rusty

Jar uses left over Astroglide.

Betty uses left over anal lube.

Mighty nice of you to assume they have leftovers!

JARblue · 03-12-2020, 02:03 PM

Quote:

Originally Posted by Rusty

Jar uses left over Astroglide.

Wrong! It's not leftover. I use these to ease insertion

Falconquey · 03-12-2020, 02:08 PM

Quote:

Originally Posted by JARblue

Wrong! It's not leftover. I use these to ease insertion

Oh...

Nixin · 03-12-2020, 11:54 AM

A wise mechanic once told me that “it is better to pay a bit more at the pump now than to pay much more to your mechanic later.”

crazy4oldcars · 03-12-2020, 01:39 PM

Well. That sure went down-hill......wait. it started at the bottom of the hill.
Never mind.

Kirk B.

bunk · 03-12-2020, 01:52 PM

91 Shell. Only because my Z is tuned specifically for that Octane/formula.

ZoomZ · 03-12-2020, 02:15 PM

My understanding of NORTH AMERICA octane rating or AKI:

1). 87 octane and 94 octane have the same burn ENERGY. Meaning, you are not magically gaining HP or saving fuel. They have the same amount of stored energy.

2). Difference as octane number increases, is the additives that make that particular higher number BURN at a slower rate. In otherwords, igniting 94 octane is slowed vs 87. This is why relatively Higher compression engines, like 370Z ,require Minimum 91 in order to prevent detonation/pre-ignition due to heat and not during spark event.
91 is what Nissan engineers came up with after multitudes of tests.

3). The 370z ECU is smart enough to figure all this out if it gets a signal from the Knock sensor (not sure if its smart enough to understand the severity of the ping) and adjust timing accordingly.

To say accurately what will happen with 87 Octane at grandma speeds, Id be a liar. I'm sure OAT, engine temps, water temp, all will be a factor.

I would at least go to 89 octane minimum. I don't screw around, for .05c/litre more over 91, I use Chevron 94 which is Ethanol free. All 91 have ethanol here with the exception of Shell. (I'm west coast Canada)

Nothing wrong with Ethanol and modern cars. The rubber components are made as such. As long as you are driving with it and tank is continuously re-filled. DONT store with Ethanol gas!! I'm spring/ summer only and I store rest of time.

Please correct me if I'm wrong.

JARblue · 03-12-2020, 02:18 PM

Quote:

Originally Posted by ZoomZ

Please correct me if I'm wrong.

Wrong thread

ZoomZ · 03-12-2020, 02:20 PM

Quote:

Originally Posted by JARblue

Wrong thread

Was it for the oil thread?

dave11 · 03-12-2020, 05:58 PM

Quote:

Originally Posted by ZoomZ

To say accurately what will happen with 87 Octane at grandma speeds, Id be a liar. I'm sure OAT, engine temps, water temp, all will be a factor.

Please correct me if I'm wrong.

IMHO if you are going to drive at Grandma speeds, and I am 75, why did you even buy a Z? My Z has never had anything but highest octane Shell I can find.

ZoomZ · 03-12-2020, 08:18 PM

Quote:

Originally Posted by dave11

IMHO if you are going to drive at Grandma speeds, and I am 75, why did you even buy a Z? My Z has never had anything but highest octane Shell I can find.

I was referring to the OP. He/she stated they will drive Normal..

Don't worry, I'm driving it like a Z.

vtec to vvel · 03-12-2020, 08:48 PM

Quote:

Originally Posted by dave11

IMHO if you are going to drive at Grandma speeds, and I am 75, why did you even buy a Z? My Z has never had anything but highest octane Shell I can find.

I drive at "grandma speeds". You're from the Tampa area, and you know how many idiot drivers, not to mention uninsured drivers (I believe FL leads the nation in this category if I'm not mistaken), we have in this general area. Then, we also have sh!tty roads for the most part - aside from being the lightning capital of the world, we're also the pothole capital.

I so much as downshift, then some ricer civic thinks a race is on. So by me driving slow, they get impatient/pissed and drive off.

Spooler · 03-12-2020, 10:03 PM

Quote:

Originally Posted by ZoomZ

My understanding of NORTH AMERICA octane rating or AKI:

1). 87 octane and 94 octane have the same burn ENERGY. Meaning, you are not magically gaining HP or saving fuel. They have the same amount of stored energy.

3). The 370z ECU is smart enough to figure all this out if it gets a signal from the Knock sensor (not sure if its smart enough to understand the severity of the ping) and adjust timing accordingly.

Please correct me if I'm wrong.

OK, no you don't gain more HP by running 93 oct via the fuel. You get the extra HP because the ECU will run more timing in the motor. More power and better fuel economy is the result.

Rusty · 03-12-2020, 10:24 PM

Quote:

Originally Posted by ZoomZ

My understanding of NORTH AMERICA octane rating or AKI:

1). 87 octane and 94 octane have the same burn ENERGY. Meaning, you are not magically gaining HP or saving fuel. They have the same amount of stored energy.

2). Difference as octane number increases, is the additives that make that particular higher number BURN at a slower rate. In otherwords, igniting 94 octane is slowed vs 87. This is why relatively Higher compression engines, like 370Z ,require Minimum 91 in order to prevent detonation/pre-ignition due to heat and not during spark event.
91 is what Nissan engineers came up with after multitudes of tests.

3). The 370z ECU is smart enough to figure all this out if it gets a signal from the Knock sensor (not sure if its smart enough to understand the severity of the ping) and adjust timing accordingly.

To say accurately what will happen with 87 Octane at grandma speeds, Id be a liar. I'm sure OAT, engine temps, water temp, all will be a factor.

I would at least go to 89 octane minimum. I don't screw around, for .05c/litre more over 91, I use Chevron 94 which is Ethanol free. All 91 have ethanol here with the exception of Shell. (I'm west coast Canada)

Nothing wrong with Ethanol and modern cars. The rubber components are made as such. As long as you are driving with it and tank is continuously re-filled. DONT store with Ethanol gas!! I'm spring/ summer only and I store rest of time.

Please correct me if I'm wrong.

Back in the 60's, when Honda first got into Motorcycle GP racing. They had 2 cylinder 50cc bikes, 125cc 5 cylinder bikes and 250 and 350 6 cylinder bikes. All rev'ed to 20,000 rpm and over, and had a CR of 14 to 1. Honda found out that high octane race gas (110 +) would not burn fast enough to make the power they wanted. They ended up with a special blend of race gas with the octane in the high 70's to low 80's. This was the only fuels that would burn fast enough at those rpm's.

03-12-2020, 11:54 AM	#5 (permalink)
Nixin A True Z Fanatic Join Date: Sep 2015 Location: GWN Posts: 3,488 Drives: Goodbye Z! Rep Power: 19833	A wise mechanic once told me that “it is better to pay a bit more at the pump now than to pay much more to your mechanic later.” sx moneypit and mrfulk like this.

03-12-2020, 01:39 PM	#6 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28414	Well. That sure went down-hill......wait. it started at the bottom of the hill. Never mind. Kirk B. KaienZ34, JARblue, Rusty and 2 others like this.

03-12-2020, 01:52 PM	#7 (permalink)
bunk A True Z Fanatic Join Date: Mar 2018 Location: Southern California Posts: 4,077 Drives: 2010 370z Roadster Rep Power: 2684370	91 Shell. Only because my Z is tuned specifically for that Octane/formula. __________________ -Drop in K&N Filter -Invidia Gemini CBE -Z1 Oil Cooler -Swift Springs - EcuTek -Forgestar F14 -SPL Camber Links -Akebono BBK Upgrade -Z1 Premium SS Lines -SPL Diff Bushings -SPL FUCAs - BellRaceworks Diff Brace

03-12-2020, 02:15 PM	#8 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 805 Drives: 17' 370Z Nismo Rep Power: 40656	My understanding of NORTH AMERICA octane rating or AKI: 1). 87 octane and 94 octane have the same burn ENERGY. Meaning, you are not magically gaining HP or saving fuel. They have the same amount of stored energy. 2). Difference as octane number increases, is the additives that make that particular higher number BURN at a slower rate. In otherwords, igniting 94 octane is slowed vs 87. This is why relatively Higher compression engines, like 370Z ,require Minimum 91 in order to prevent detonation/pre-ignition due to heat and not during spark event. 91 is what Nissan engineers came up with after multitudes of tests. 3). The 370z ECU is smart enough to figure all this out if it gets a signal from the Knock sensor (not sure if its smart enough to understand the severity of the ping) and adjust timing accordingly. To say accurately what will happen with 87 Octane at grandma speeds, Id be a liar. I'm sure OAT, engine temps, water temp, all will be a factor. I would at least go to 89 octane minimum. I don't screw around, for .05c/litre more over 91, I use Chevron 94 which is Ethanol free. All 91 have ethanol here with the exception of Shell. (I'm west coast Canada) Nothing wrong with Ethanol and modern cars. The rubber components are made as such. As long as you are driving with it and tank is continuously re-filled. DONT store with Ethanol gas!! I'm spring/ summer only and I store rest of time. Please correct me if I'm wrong. JARblue likes this.