Gas

Blackbelt

Can I use non-ethanol 90 octane in my 370z or should I use 93 octane with ethanol?

cooltoy

I read some where at one time that ethanol is not good for 370Z engine gaskets, or something like that. But that could be wrong. Just because someone said it, it's not necessary true.



Shell does not put ethanol into their V-power gas, it's 91 octane. That is all I ever use.

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2011 Nismo#91

Pretty much all cars and 370s included use E10 (up to 10% ethanol). There is no issue going to 0% ethanol because that's pretty much what the summer blend has been/is in every day gas. There is a small benefit to ethanol free in the terms of mpg but it isn't really noticable nor is it ever worth the extra cost.

Please remember the 370Z requires premium gasoline with at least 91 octane according to the manual. pages 10-4 to 10-6

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GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

gbrettin

Ethanol is fine for the Z's engine. Straight E is less energy dense than gasoline so it requires a tune, aka injectors to be scaled roughly 30% more.

The thing to watch out for E is having rubber fuel line because it will eat the lines and then it will end up in the fuel injectors. All the fuel lines should be PTFE.

I ripped all the fuel lines out of my car and can't recall exactly where, if any, rubber lines are in OEM form. Charles/Phunk with CJM is pretty much the authority on OE fuel lines and what to do.

abm89

I agree with what's been posted here already. E10 is perfectly fine. I've used Shell vpower for most of my fillups for the time i've had my car (since 2013 and i did most of the 153k miles). I've had no issues.

I currently switch between going full E85 with a full tank of 93 every few fill ups. E is a lifesaver for me down here in the Texas heat.

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ZoomZ

Ethanol gas @10 will not affect the Octane rating much.. You need 91 and you could probably get away with 90 if it's from a reputable source. (and you are N/A)

If it' s only pennies more for the 93, there is no question to be asked. I'd stick with 93 regardless of the price. (shouldn't be much more anyway)

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ZoomZ

It' snot good for anything. LOL

BTW, ALL gas in Canada including Shell V power and Chevron 94 now CONTAIN 10% Ethanol. Thanks to our supreme Left wing leader. Saving the planet from everyone else.

"Shell Canada
Enquiry: Ethanol content in V-Power gasoline
Response:
Good morning, Starting in 2022, all gasoline grades sold in Canada will be blended with ethanol, including premium gasoline (V-Power 91 and 93) according to proposed regulations (10% ethanol Federal Clean Fuel Regulation for 2022, Low Carbon Fuel Requirements and need to reduce the carbon intensity of fossil fuels, which ethanol is one mechanism to reduce carbon intensity).
All the provinces are switching slowly, and If you see the label at the pump, “Gasoline may contain up to 10% Ethanol” is already happening".

Regards, Sylvie Martin Shell Canada,
Technical Support Email: shelltechnical-ca@shell.com

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ZoomZ

This, of course coming from a Corn grower organization but worth the read:

https://www.ilcorn.org/news-and-medi.../ethanol-myths

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“Action without vision is a nightmare.”

cooltoy

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2011 Nismo#91

I wouldn't say it's all bad, if it was at my racetrack I would use it over other options. Higher Octane and runs just a little bit cooler.

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GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

ZoomZ

The article I added, seems to disspel a lot of Ethanol rumours. How much truth there is to that? Unsure, as it is written by a Corn grower association.

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“Action without vision is a nightmare.”

abm89

corn-based ethanol is a net loss in overall carbon emissions thanks to what corn does to the soil. Apparently, sugarcane based E is the way to go (see brazil) but im not going to claim expertise in chemical engineering or agriculture.

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Complete Parts List:
https://github.com/abm89/ztouge-build

abm89

After learning a TON with Seb doing the logging for my flex-fuel tune, the benefits of using E in extreme heat is so obvious. in 90F ambient, my car will retard timing by quite a bit to protect itself on 93, but something like E75 i saw absolutely no timing correction. Also thanks to my dash, i get digital readouts for the coolant temp and i would say it does seem to run a tad cooler, but im talking 1-2 degrees F.

Not to mention my car doesnt smell. (even with the LTH-HFC setup). I don't think there's any good reason to run test pipes with better HFC technology now unless you're doing competitive racing.

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Complete Parts List:
https://github.com/abm89/ztouge-build

SG4247

I have run straight E85 pump in my car for years.

GTR stock injectors, and now a DEATSCHWERKS fuel pump but only for safety when on Nitrous. The stock pump worked fine when pulled.

My car knocks on E10 87, but runs safely on E10 91 and 93.

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

Tractionless

Do you have backup from Shell on this statement? In FL, the pump says all grades have up to 10% E.

How is E helping with ambient heat?

Yup just like the Harvard "study" (scam) about cholesterol big sugar paid for in 1960's/70's "finding" cholesterol was the heart killer when in actuality sugar is the culprit!!!

What parameter is the Z using to retard timing? Intake or coolant temp? If coolant temp. simply get a Infiniti 21200-4W000 stat. If intake temp. nothing you can do about that other than CAI.

I'm typically around 185-190* in south florida with the above stat and haven't seen 200 yet with an all OE cooling system and no engine bay ventilation.

It should knock on anything below 91 and is why lesser octane fuels aren't listed in the owners manual.

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