HELP! WRONG GAS IN CAR - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

nabil_frs · 05-06-2013, 12:04 AM

Hey guys so my dad accidentally put 87 instead of the premium 91 he only put 20$ so about 16L but i noticed a pinging noise more then usual and i asked him and he realized he put the wrong gas in the tanks half empty now but WHAT DO I DO!!!! HELPPPPPPPP

7thgear · 05-06-2013, 12:11 AM

put some octane booster in it and don't WOT, keep mixing in proper gas until replenished

DjDATZ · 05-06-2013, 02:00 AM

Get the tank as empty as possible, and then throw in premium. One tank of 87 won't hurt.

Enemies · 05-06-2013, 07:59 AM

What the first guy said. Octane boost.

I wouldn't try to run the tank on empty with 87 in it.

Have 94 gas available? I'd fill up with that the next go around and run it as close to empty as you can and then go back to 91 as per usual.

Chinadian · 05-06-2013, 08:52 AM

What happens to your engine when you use lower octane? just curious.

Thorpedo · 05-06-2013, 10:44 AM

It prevents your engine from running as much timing advance as it can. Take it easy on this tank and it won't hurt anything. After you fill up with 91, pull your negative cable for 5 minutes to reset the ECU. Your car will have pulled timing to reduce detonation and you can eliminate this by resetting it.

B L U E S L A T E · 05-06-2013, 11:14 AM

Go get some 100 octane gas.

Dadhawk · 05-06-2013, 11:47 AM

Quote:

Originally Posted by nabil_frs

Hey guys so my dad accidentally put 87 instead of the premium 91 he only put 20$ so about 16L but i noticed a pinging noise more then usual and i asked him and he realized he put the wrong gas in the tanks half empty now but WHAT DO I DO!!!! HELPPPPPPPP

For what its worth from a random guy on the Internet, I wouldn't worry about it.

I'm about 99% sure mine was delivered with 87 in it in the first tank, as I watched the dealer do it and was so excited about getting the car it completely passed by me until the first time I put gas in it at the same pump and realized what had happened.

You could go ahead and fill it up which will even it out some, or put octane booster in it, but the car will run on the 87 fine.

wparsons · 05-06-2013, 11:54 AM

If you're hearing pinging at part throttle there's something else wrong besides a tank of 87 octane.

Drive the care nicely, keep the revs down and your foot away from WOT and you will be 100% fine.

That said, the ECU is smart enough to pull timing when it detects pinging, so even if you were to beat on it you would be ok, just at a reduced power output.

djdnz · 05-06-2013, 04:49 PM

You'll be fine don't worry. As others have said, fill the rest up with either 91 or 94 and take it easy this tank.

05-06-2013, 12:04 AM	#1
nabil_frs Member Join Date: Mar 2013 Drives: Argento FR-S Location: Mississauga Posts: 42 Thanks: 1 Thanked 1 Time in 1 Post Mentioned: 2 Post(s) Tagged: 0 Thread(s)	HELP! WRONG GAS IN CAR Hey guys so my dad accidentally put 87 instead of the premium 91 he only put 20$ so about 16L but i noticed a pinging noise more then usual and i asked him and he realized he put the wrong gas in the tanks half empty now but WHAT DO I DO!!!! HELPPPPPPPP

05-06-2013, 12:11 AM	#2
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,508 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	put some octane booster in it and don't WOT, keep mixing in proper gas until replenished __________________ don't you think if I was wrong, I'd know it?

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05-06-2013, 07:59 AM	#4
Enemies Senior Member Join Date: Feb 2012 Drives: '13 SWP Sport-Tech (Limited) Location: Okanagan Valley, Canada Posts: 1,093 Thanks: 11 Thanked 86 Times in 55 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	What the first guy said. Octane boost. I wouldn't try to run the tank on empty with 87 in it. Have 94 gas available? I'd fill up with that the next go around and run it as close to empty as you can and then go back to 91 as per usual.

05-06-2013, 08:52 AM	#5
Chinadian Senior Member Join Date: Sep 2012 Drives: FRS Whiteout Location: Canada Posts: 105 Thanks: 55 Thanked 4 Times in 2 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	What happens to your engine when you use lower octane? just curious.

05-06-2013, 10:44 AM	#6
Thorpedo The SquadWhisperer Join Date: Mar 2013 Drives: '13 Ultramarine FR-S (STX) Location: Nova Scotia, Canada Posts: 681 Thanks: 383 Thanked 477 Times in 207 Posts Mentioned: 16 Post(s) Tagged: 0 Thread(s)	It prevents your engine from running as much timing advance as it can. Take it easy on this tank and it won't hurt anything. After you fill up with 91, pull your negative cable for 5 minutes to reset the ECU. Your car will have pulled timing to reduce detonation and you can eliminate this by resetting it.

05-06-2013, 11:14 AM	#7
B L U E S L A T E Senior Member Join Date: Dec 2012 Drives: BMW E84 Location: SoCal Posts: 706 Thanks: 635 Thanked 388 Times in 219 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Go get some 100 octane gas.

05-06-2013, 04:49 PM	#10
djdnz 1337 Join Date: Oct 2011 Drives: 2013 BRZ WRB S/C Location: San Jose, CA / Waterloo, ON Posts: 1,134 Thanks: 776 Thanked 482 Times in 269 Posts Mentioned: 7 Post(s) Tagged: 2 Thread(s)	You'll be fine don't worry. As others have said, fill the rest up with either 91 or 94 and take it easy this tank.

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