A Brain Fart...

MZ DAIZY · 03-11-2021, 12:10 PM

Got gas today and pumped about 10 gallons of regular (89) octane into MZ DAIZY Before I realized I pushed the wrong button on the pump. She’s been tuned for 93 octane. I figure there’s a mix of about 4 gallons of 93 to 10 gallons of 89. What should be my plan of action and how bad a F-UP is this?

Rusty · 03-11-2021, 01:33 PM

It's not bad. You're not pushing boost. When you get down to 3/4 tank. Top it off again. Do this about 2 times. Don't run it hard until after the 3th time.

MZ DAIZY · 03-11-2021, 01:55 PM

Quote:

Originally Posted by Rusty

It's not bad. You're not pushing boost. When you get down to 3/4 tank. Top it off again. Do this about 2 times. Don't run it hard until after the 3th time.

Thanks Rusty.. got so much going on in my mind with an elderly dementia parent. I scare myself sometimes... My wife tried to make me feel better by telling me that at least I didn’t pump diesel in her. That’s what she said! LOL. I’m preaching to the choir, but getting old ain’t for sissies... I’m walking into rooms and wondering the the eff I came into here for... sometimes the bathroom!

Thanks for the help!

SouthArk370Z · 03-11-2021, 02:41 PM

As per Rusty, it's not that big of a deal. After a few fillups, you should be good to go. If you notice any knock/ping, let off the accelerator pedal until it goes away.

Rusty · 03-11-2021, 03:00 PM

My buddy put diesel in his Harley one time and tried to start it.

It was ugly. Called someone to pick the bike up at the station. They loaded it on a flat bed. On the way to the dealership. The bike fell over.

bcrider · 03-11-2021, 03:19 PM

Would adding a bottle of octane booster help raise the numbers and possibly make it easer on the motor?

crazy4oldcars · 03-11-2021, 04:28 PM

I was wondering about octane booster, too.
Assuming the 14 gallons gave you a full 19 gallon tank, and the prior tank was 93 octane, the math puts you just under 91 octane for the tank full. Just go easy on her, and she'll be fine.

Kirk B.

cooltoy · 03-11-2021, 05:20 PM

Burn it off.

You are only in trouble if you hear knocking.

Spooler · 03-11-2021, 06:34 PM

Just drive MZ DAIZY like you are driving Mrs. Daisy and that fuel will be gone in no time. No worries.

BettyZ · 03-11-2021, 07:58 PM

Should be fine... but STP has legit octane booster if you want to use some of that

Sent from my SM-G955U using Tapatalk

Rusty · 03-11-2021, 09:10 PM

Quote:

Originally Posted by crazy4oldcars

I was wondering about octane booster, too.
Assuming the 14 gallons gave you a full 19 gallon tank, and the prior tank was 93 octane, the math puts you just under 91 octane for the tank full. Just go easy on her, and she'll be fine.

Kirk B.

You could use octane booster. Just cost you more.

crazy4oldcars · 03-12-2021, 09:18 AM

Quote:

Originally Posted by Rusty

You could use octane booster. Just cost you more.

But our girls are WORTH it!

Kirk B.

Fuzzzy · 03-12-2021, 10:10 AM

My wife's aunt put diesel at her first fill up of her brand new Lexus several years ago. THAT was a problem.

I agree with others. Keep adding the right stuff frequently until all the cheap stuff is gone. Don't push it hard during the interim and you should be fine.

FL 4Motion · 03-12-2021, 12:39 PM

No worries, here I’ll tell you a story to help you feel a lot better...

Back around 2010 or so with our first nismo, wifey and I wanted to get a pre up rev tune dyno so we could compare before and after, the car had FI lth’s, FI cbe, cai.

We got to our shop for the dyno, decided to fill up beforehand since we were down below a 1/4 tank. Accidentally filled up with 87 octane since we hadn’t driven the z in a while and were used to filling up the dd.

Got to the shop, told them what happened, was expecting to reschedule but we decided to just pour in some octane booster, iirc it was race gas octane booster.

We dynoed, no pinging or knock, and the z put down 321 whp in 5th gear.

Car went on to be thrashed on the track for the next 3 years no problem.

You’ll be fine.

MZ DAIZY · 03-12-2021, 02:16 PM

Quote:

Originally Posted by Rusty

My buddy put diesel in his Harley one time and tried to start it.

It was ugly. Called someone to pick the bike up at the station. They loaded it on a flat bed. On the way to the dealership. The bike fell over.

Yea, I’ve had bad days, but not that bad!

03-11-2021, 12:10 PM	#1 (permalink)
MZ DAIZY A True Z Fanatic Join Date: Feb 2018 Location: Atlanta Posts: 1,776 Drives: Miss Daisy Rep Power: 549977	A Brain Fart... Got gas today and pumped about 10 gallons of regular (89) octane into MZ DAIZY Before I realized I pushed the wrong button on the pump. She’s been tuned for 93 octane. I figure there’s a mix of about 4 gallons of 93 to 10 gallons of 89. What should be my plan of action and how bad a F-UP is this? __________________ Stillen Gen 3 CAI, Fast Intentions CBE, Z1 34 Row Oil Cooler, Ecuteck Tuned by Dave at Z1, Clear Bra, Z1 Hood Stuts

03-11-2021, 01:33 PM	#2 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,853 Drives: 2011 Nismo GM 6M Rep Power: 2684436	It's not bad. You're not pushing boost. When you get down to 3/4 tank. Top it off again. Do this about 2 times. Don't run it hard until after the 3th time. FL 4Motion, SouthArk370Z, cv129 and 5 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

03-11-2021, 02:41 PM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	As per Rusty, it's not *that* big of a deal. After a few fillups, you should be good to go. If you notice any knock/ping, let off the accelerator pedal until it goes away. FL 4Motion, cv129, Rusty and 5 others like this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

03-11-2021, 03:00 PM	#5 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,853 Drives: 2011 Nismo GM 6M Rep Power: 2684436	My buddy put diesel in his Harley one time and tried to start it. It was ugly. Called someone to pick the bike up at the station. They loaded it on a flat bed. On the way to the dealership. The bike fell over. MZ DAIZY likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

03-11-2021, 03:19 PM	#6 (permalink)
bcrider Base Member Join Date: Apr 2016 Location: North Ga Posts: 8 Drives: Tacoma Rep Power: 9	Would adding a bottle of octane booster help raise the numbers and possibly make it easer on the motor? crazy4oldcars, MZ DAIZY and BettyZ like this.

03-11-2021, 04:28 PM	#7 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28412	I was wondering about octane booster, too. Assuming the 14 gallons gave you a full 19 gallon tank, and the prior tank was 93 octane, the math puts you just under 91 octane for the tank full. Just go easy on her, and she'll be fine. Kirk B. MZ DAIZY likes this.

03-11-2021, 05:20 PM	#8 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 13,937 Drives: 14 PW 370Z S/T MT Rep Power: 240204	Burn it off. You are only in trouble if you hear knocking. JARblue, cv129, sx moneypit and 3 others like this. __________________ Member of kenchan's "photoshopped mods" and "proper offsets" gang. Last edited by cooltoy; 03-11-2021 at 05:22 PM.

03-11-2021, 06:34 PM	#9 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,505 Drives: 2013 Nismo 370z Rep Power: 2684391	Just drive MZ DAIZY like you are driving Mrs. Daisy and that fuel will be gone in no time. No worries. FL 4Motion, JARblue, cv129 and 3 others like this.

03-11-2021, 07:58 PM	#10 (permalink)
BettyZ A True Z Fanatic Join Date: Aug 2018 Location: Chicagoland Age: 37 Posts: 5,261 Drives: A Garage Queen Rep Power: 2684370	Should be fine... but STP has legit octane booster if you want to use some of that Sent from my SM-G955U using Tapatalk MZ DAIZY likes this. __________________ '14 MB Nismo \| Boost Lab 6870 1.32 AR 553 HP / 471 ft.-lbs. Betty Mods

03-12-2021, 10:10 AM	#13 (permalink)
Fuzzzy Track Member Join Date: Mar 2014 Location: MS Posts: 875 Drives: 2014 370Z 7AT MR Rep Power: 21860	My wife's aunt put diesel at her first fill up of her brand new Lexus several years ago. THAT was a problem. I agree with others. Keep adding the right stuff frequently until all the cheap stuff is gone. Don't push it hard during the interim and you should be fine. MZ DAIZY and BettyZ like this.

03-12-2021, 12:39 PM	#14 (permalink)
FL 4Motion A True Z Fanatic Join Date: Feb 2009 Location: FL Posts: 4,776 Drives: Baby Shark Rep Power: 701615	No worries, here I’ll tell you a story to help you feel a lot better... Back around 2010 or so with our first nismo, wifey and I wanted to get a pre up rev tune dyno so we could compare before and after, the car had FI lth’s, FI cbe, cai. We got to our shop for the dyno, decided to fill up beforehand since we were down below a 1/4 tank. Accidentally filled up with 87 octane since we hadn’t driven the z in a while and were used to filling up the dd. Got to the shop, told them what happened, was expecting to reschedule but we decided to just pour in some octane booster, iirc it was race gas octane booster. We dynoed, no pinging or knock, and the z put down 321 whp in 5th gear. Car went on to be thrashed on the track for the next 3 years no problem. You’ll be fine. Rusty and MZ DAIZY like this.

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