Regular Gas?

Cypress · 06-02-2009, 09:17 PM

So if I am reading this right, "if" the dealer put in Regular gas, it won't damage anything, but I got confused on one thing? Will the ECU permanently reset the timing or just while that gas is being used to compensate for knock?

ChrisSlicks · 06-02-2009, 09:32 PM

Quote:

Originally Posted by Cypress

So if I am reading this right, "if" the dealer put in Regular gas, it won't damage anything, but I got confused on one thing? Will the ECU permanently reset the timing or just while that gas is being used to compensate for knock?

Not permanent. It will quickly recover when premium gas is put back in.

jakoye · 06-04-2009, 10:04 AM

Quote:

Originally Posted by Cypress

So if I am reading this right, "if" the dealer put in Regular gas, it won't damage anything, but I got confused on one thing? Will the ECU permanently reset the timing or just while that gas is being used to compensate for knock?

Why would the dealer put regular gas in it?

Wait, did I just ask that question?

Cjanik · 06-03-2009, 08:13 AM

^^ what does your manual say about regular gas? It's ok

2theextreme · 06-03-2009, 06:07 PM

Well, I filled my blue one up today with Premium....93 Octane.....17.5 gallons.....$47.....ouch!

bluzman · 06-03-2009, 07:03 PM

Quote:

Originally Posted by 2theextreme

Well, I filled my blue one up today with Premium....93 Octane.....17.5 gallons.....$47.....ouch!

$2.69/gallon?? You get no sympathy from this quarter. 91 octane in Santa Barbara county is well north of $3/gallon.

CBRich · 06-03-2009, 06:12 PM

Quote:

when i had my 350 i 80% of all the fillups i used with unleaded... didnt feel any diverence. my dad who grew up with datsuns and had a 300Z for a long time always used the 'cheap' gas... idk the only gas u should b worried about NOT putting in ur ar is from "THRIFTY"..

Didn't feel any "diverence" between the unleaded and leaded?

KERMIT · 03-23-2013, 10:46 PM

This will require a bit more explanation... But

If you are running MBT timing and have margin before you are knock limited, then you can safely run a lower octane fuel. However, this may be easy at light loads but at higher loads (and especially at low speed) knock will occur. Once your knock sensors detect it, timing will be retarded and engine efficiency will be reduced. All in an effort to save your engine.

122554 · 03-23-2013, 11:14 PM

You paid how much for your Z and you're worried about a couple of $$ per tank?

dP3NGU1N · 03-24-2013, 12:52 AM

It's always fun to see a four year old argument get brought back to life....

nmjaxx9 · 03-24-2013, 04:31 PM

if you not fillin her up with 93 then you are taking shortcuts.

b15 · 03-24-2013, 05:36 PM

I had a VQ in my '08 Altima and always ran it on premium. Will be doing the same for the Z too. The difference in only about $4-5 per fill up which shouldn't break the bank considering the price tag of the Z...

06-03-2009, 06:07 PM	#5 (permalink)
2theextreme RIP Tony :( (1969-2015) Join Date: Feb 2009 Location: Northern Virginia Posts: 18,802 Drives: '14 Mustang GT/CS Rep Power: 68	Well, I filled my blue one up today with Premium....93 Octane.....17.5 gallons.....$47.....ouch! __________________ SpinTech Mufflers, Airaid CAI, JBA H-Pipe, Lethal Performance Over Axle Pipes, MMD Quarter Panel Louvers, Cervini's Ram Air Type IV Hood, Carbon Fiber Radiator Cover, GT500 Rear Valance, Quad Exhaust Tips

03-23-2013, 10:46 PM	#8 (permalink)
KERMIT Enthusiast Member Join Date: Apr 2012 Location: Republic of Wadiya Posts: 301 Drives: Ms. Daisy Rep Power: 14	This will require a bit more explanation... But If you are running MBT timing and have margin before you are knock limited, then you can safely run a lower octane fuel. However, this may be easy at light loads but at higher loads (and especially at low speed) knock will occur. Once your knock sensors detect it, timing will be retarded and engine efficiency will be reduced. All in an effort to save your engine. __________________ Steering wheel with Z emblem, keyless entry, 3.7L with dual overhead cams, am/fm radio, ABS brakes, windshield, air in tires

03-23-2013, 11:14 PM	#9 (permalink)
122554 Track Member Join Date: Jan 2013 Location: My own world Posts: 506 Drives: 2010 Nismo Rep Power: 14	You paid how much for your Z and you're worried about a couple of $$ per tank? __________________ I don't normally drink beer, but when I do....i drink a lot!

06-02-2009, 09:17 PM	#1 (permalink)
Cypress Base Member Join Date: May 2009 Location: Cypress, TX Posts: 49 Drives: 370Z Touring Sport Rep Power: 17	So if I am reading this right, "if" the dealer put in Regular gas, it won't damage anything, but I got confused on one thing? Will the ECU permanently reset the timing or just while that gas is being used to compensate for knock?

06-03-2009, 08:13 AM	#4 (permalink)
Cjanik Track Member Join Date: May 2009 Location: Las Vegas Posts: 578 Drives: N/A Rep Power: 18	^^ what does your manual say about regular gas? It's ok

03-24-2013, 12:52 AM	#10 (permalink)
dP3NGU1N A True Z Fanatic Join Date: Feb 2011 Location: Irvine Posts: 1,682 Drives: 13 PW sport 6mt Rep Power: 19	It's always fun to see a four year old argument get brought back to life....

03-24-2013, 04:31 PM	#11 (permalink)
nmjaxx9 A True Z Fanatic Join Date: Jul 2011 Location: Middletown, Ct Posts: 5,853 Drives: 2011 Nissan 370z Rep Power: 27	if you not fillin her up with 93 then you are taking shortcuts.

03-24-2013, 05:36 PM	#12 (permalink)
b15 A True Z Fanatic Join Date: Feb 2010 Location: Chicago Posts: 3,229 Drives: 4drz Rep Power: 36572	I had a VQ in my '08 Altima and always ran it on premium. Will be doing the same for the Z too. The difference in only about $4-5 per fill up which shouldn't break the bank considering the price tag of the Z...