What are the danger .... 87 Oct in the '11-12 370Z

LunaZ · 03-07-2011, 08:16 AM

Quote:

Originally Posted by Jeffblue

don't cheap out on gas. its a 40k car. and like said above, its $5 per fill up. yes, gas in general is expensive, but premium gas isn't really that much more expensive than regular.

Assuming you put 12,000 a miles a year on the car, and assuming the car gets 20 miles a gallon, thats 600 gallons of fuel per year. Assuming a delta of 20 cents per gallon between regular and premium, that is $120 PER YEAR difference between using premium and regular. You and your wife can just like, eat taco bell instead of going out to dinner like once or twice and that pays for your gas.

its such a small difference if you think about it, which is why it always irks me when i see people putting 87 in their cars that reqiure premium fuel.

Technically the reason why you don't want to put regular instead of premium is because our engine runs high compression. Lower octane fuel will combust sooner and less consistently than high octane fuel. So the fuel will basically combust before its supposed to causing knocking and damaging the engine.

Everything he said.
If $120 more in fuel costs over a year is a deciding factor for someone, they need to re-evaluate their car purchase.

You could look into a Flex Fuel adapter for the car.
E85 is currently around $1.50 cheaper than premium gasoline. Filling up my Ranger costs $15-20 less than a pit stop in the Z. Corn gets a few miles less per gallon than dinosaurs, but it is reported to make more power. Of course, there's also the added expense of modifying the car in the first place.

PapoZalsa · 03-07-2011, 08:29 AM

What the Owner's Manual say?... PREMIUM

Other than that the owner is looking for problems.

Wrenise · 03-07-2011, 11:42 AM

I am facing a hard choice as well. The ESSO stations here in Germany all swapped to E10. I can still get premium 93 but what would be the long term issues of using E10 rated at 95 oct?

gbrettin · 03-07-2011, 12:12 PM

Under stock set up you only need 91. I'm not sure why other people are saying they run 93. Why would you need anything higher? You only need it if the compression was changed through modification on your engine. Running higher octane would be throwing your money. Please correct me otherwise.

m4a1mustang · 03-07-2011, 12:15 PM

Quote:

Originally Posted by gbrettin

Under stock set up you only need 91. I'm not sure why other people are saying they run 93. Why would you need anything higher? You only need it if the compression was changed through modification on your engine. Running higher octane would be throwing your money. Please correct me otherwise.

On the east coast it's somewhat rare to find stations with 91. We usually offer 87, 89, and 93.

gbrettin · 03-07-2011, 12:18 PM

Yeah, most gas stations here offer only 93. The only exception to this is Sunoco which offer 87 - 93. I typically goto Sunoco.

Jeffblue · 03-07-2011, 12:22 PM

Quote:

Originally Posted by gbrettin

Under stock set up you only need 91. I'm not sure why other people are saying they run 93. Why would you need anything higher? You only need it if the compression was changed through modification on your engine. Running higher octane would be throwing your money. Please correct me otherwise.

i also go to sunoco and they have 91 and 93. i figure theres such a small difference (2-3 cents) i might as well just go 93

gbrettin · 03-07-2011, 12:28 PM

I will need to take a second look at the prices but I thought there was more of a 10 cent price difference between 91 and 93. I drive 110mi per day in the Z at least so it adds up. I'm not crying about the prices either. I knew what I was going to get when I bought the car.

Jeffblue · 03-07-2011, 12:49 PM

Quote:

Originally Posted by gbrettin

I will need to take a second look at the prices but I thought there was more of a 10 cent price difference between 91 and 93. I drive 110mi per day in the Z at least so it adds up. I'm not crying about the prices either. I knew what I was going to get when I bought the car.

i guess it depends where you are. i have a 10 mile commute. and around here the difference is very small. the big gap is 89-91 i think

kenchan · 03-07-2011, 12:56 PM

Quote:

Originally Posted by gbrettin

I will need to take a second look at the prices but I thought there was more of a 10 cent price difference between 91 and 93. I drive 110mi per day in the Z at least so it adds up. I'm not crying about the prices either. I knew what I was going to get when I bought the car.

10 cents x 18 gallons (usual fillup amount) = $1.80

who cares...

LunaZ · 03-07-2011, 01:48 PM

Quote:

Originally Posted by kenchan

10 cents x 18 gallons (usual fillup amount) = $1.80

who cares...

This guy's numbers are gonna add up pretty quickly at 110 miles a day. That's a fill up every 3 or 4 days assuming he's staying out of the fun pedal and maximizing his fuel economy. Assuming two fillups a week (which is what my fun pedal usage would require), he'd save $187.20 a year by using 91 vs. 93.
Certainly not a make or break it figure, but if 91 works just fine, why not pocket the savings?

gbrettin · 03-07-2011, 02:15 PM

Kenchan is right. I don't get bent out of shape when I stop somewhere else and fill with 93 and spend the extra 1.80. On the flip side, I try not spending more than I have to when possible.

I was more so curious to know if the car adjusted further to 93 octane.

kenchan · 03-07-2011, 02:16 PM

Quote:

Originally Posted by LunaZ

This guy's numbers are gonna add up pretty quickly at 110 miles a day. That's a fill up every 3 or 4 days assuming he's staying out of the fun pedal and maximizing his fuel economy. Assuming two fillups a week (which is what my fun pedal usage would require), he'd save $187.20 a year by using 91 vs. 93.
Certainly not a make or break it figure, but if 91 works just fine, why not pocket the savings?

if 91 works fine and $187.20 is a big deal, i suppose that is a good option~...

but that could also mean $187.20 less consumed tacos and burgers which would be cheaper considering medical visits and bills. lol

are you REALLY saving money by doing this overall? i dont know... i doubt it. people think they're saving nickles and dimes here and there but still in the red often do to worse habits.

zman1910 · 03-07-2011, 02:17 PM

Since the car is mapped for 91 than there is no use putting in 93....unless that is the only one offered. Some people just like to waste money I guess.

Every car that uses premium gas is mapped for 91 from the factory bc it is the widely available minimum octane rating

Oh and the difference between 91 and 93 is more like 5 cents.....so even that annual amount gets sliced in half to 93 bucks and change.

Jeffblue · 03-07-2011, 02:19 PM

Quote:

Originally Posted by kenchan

if 91 works fine and $187.20 is a big deal, i suppose that is a good option~...

but that could also mean $187.20 less consumed tacos and burgers which would be cheaper considering medical visits and bills. lol

are you REALLY saving money by doing this overall? i dont know... i doubt it. people think they're saving nickles and dimes here and there but still in the red often do to crystal meth

03-07-2011, 08:29 AM	#17 (permalink)
PapoZalsa A True Z Fanatic Join Date: Nov 2009 Location: Not in Sunny Florida Posts: 6,358 Drives: 16 Nismo w/Tech Pack Rep Power: 4500	What the Owner's Manual say?... PREMIUM Other than that the owner is looking for problems. __________________ 2009 370Z MB Base w/Sport Package 6MT Modshack's Custom Air Intakes /3M Clear Bra/ Illuminated Kick Plates / F. I CBE w/12" resonators / EVO-R Front Lip / Rear Hatch Wing / Tein S-Tech Springs /Ilegal Tint in the Rep. of VA/4x20mm Z1 Spacers/ Vinyl Roof/Liquid Carbon Designs

03-07-2011, 02:17 PM	#29 (permalink)
zman1910 Enthusiast Member Join Date: Nov 2008 Location: FL Posts: 361 Drives: 2011 Audi S4 Rep Power: 429	Since the car is mapped for 91 than there is no use putting in 93....unless that is the only one offered. Some people just like to waste money I guess. Every car that uses premium gas is mapped for 91 from the factory bc it is the widely available minimum octane rating Oh and the difference between 91 and 93 is more like 5 cents.....so even that annual amount gets sliced in half to 93 bucks and change. Last edited by zman1910; 03-07-2011 at 02:23 PM.

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03-07-2011, 11:42 AM	#18 (permalink)
Wrenise Base Member Join Date: Jan 2011 Location: Kaiserslautern Germany Posts: 59 Drives: 2011 G37S 6MT Sedan Rep Power: 14	I am facing a hard choice as well. The ESSO stations here in Germany all swapped to E10. I can still get premium 93 but what would be the long term issues of using E10 rated at 95 oct?

03-07-2011, 12:12 PM	#19 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,284 Drives: Tricycle Rep Power: 589151	Under stock set up you only need 91. I'm not sure why other people are saying they run 93. Why would you need anything higher? You only need it if the compression was changed through modification on your engine. Running higher octane would be throwing your money. Please correct me otherwise.

03-07-2011, 12:18 PM	#21 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,284 Drives: Tricycle Rep Power: 589151	Yeah, most gas stations here offer only 93. The only exception to this is Sunoco which offer 87 - 93. I typically goto Sunoco.

03-07-2011, 12:28 PM	#23 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,284 Drives: Tricycle Rep Power: 589151	I will need to take a second look at the prices but I thought there was more of a 10 cent price difference between 91 and 93. I drive 110mi per day in the Z at least so it adds up. I'm not crying about the prices either. I knew what I was going to get when I bought the car.

03-07-2011, 02:15 PM	#27 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,284 Drives: Tricycle Rep Power: 589151	Kenchan is right. I don't get bent out of shape when I stop somewhere else and fill with 93 and spend the extra 1.80. On the flip side, I try not spending more than I have to when possible. I was more so curious to know if the car adjusted further to 93 octane.