I put wrong fuel in 86 gts - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Jp8802 · 08-23-2020, 12:53 AM

Hey guys, I own an 86 gts, 2 yrs old now.

I live in Sydney Australia. Today I accidentally filled the car with roughly 5 litres of 94 ethanol e10. I quickly realised and stopped, and filled up the car with 98 octane. My question is... do I need to get the petrol drained from the car?

The car was empty when I first started filling up.

I am concerned with the injectors

mariooo86 · 08-23-2020, 12:56 AM

Quote:

Originally Posted by Jp8802

Hey guys, I own an 86 gts, 2 yrs old now.

I live in Sydney Australia. Today I accidentally filled the car with roughly 5 litres of 94 ethanol e10. I quickly realised and stopped, and filled up the car with 98 octane. My question is... do I need to get the petrol drained from the car?

The car was empty when I first started filling up.

I am concerned with the injectors

you should be okay since it was a small amount, just keep trying to dilute the gas with higher octane

Sent from my iPhone using Tapatalk

Jp8802 · 08-23-2020, 01:06 AM

Quote:

Originally Posted by mariooo86

you should be okay since it was a small amount, just keep trying to dilute the gas with higher octane

Sent from my iPhone using Tapatalk

Thanks for letting me know. I have 90km trip tomorrow, and once done I will fill up the car again with 98 to dilute it. I tried checking online but it only says up to 2017 model is compatible.

Tcoat · 08-23-2020, 02:02 AM

100% ok. If you check your manual you will see that 98 is recommended but 94 is required. You can even use 91 now and then with no ill effects other than a drop in performance.

Kaotic Lazagna · 08-23-2020, 02:05 AM

Probably should try to avoid driving it hard until you use up all the fuel or have mixed in enough premium in to actually have a 98 in the tank just to be safe. I'm sure the computer is compensating for the lower octane, but it doesn't hurt to play it safe.

Tcoat · 08-23-2020, 02:13 AM

Quote:

Originally Posted by Kaotic Lazagna

Probably should try to avoid driving it hard until you use up all the fuel or have mixed in enough premium in to actually have a 98 in the tank just to be safe. I'm sure the computer is compensating for the lower octane, but it doesn't hurt to play it safe.

Read my post above. It is the same as us using 91 octane and will not harm the car in any way.

Kaotic Lazagna · 08-23-2020, 02:16 AM

Quote:

Originally Posted by Tcoat

Read my post above. It is the same as us using 91 octane and will not harm the car in any way.

Doesn't it say that using lower grade fuels can cause knocking?

Tcoat · 08-23-2020, 02:21 AM

Quote:

Originally Posted by Kaotic Lazagna

Doesn't it say that using lower grade fuels can cause knocking?

The manual says minimum 91. His 94 is our 91. It is a total non issue. Even the drop in performance is almost non existent for street driving.
We can run 89 for brief periods without harm as well but I wouldn’t use it all the time and the drop in performance is noticeable.
There are many people that can’t even get anything more than 91.

humfrz · 08-23-2020, 02:25 AM

Quote:

Originally Posted by Jp8802

Hey guys, I own an 86 gts, 2 yrs old now.

I live in Sydney Australia. Today I accidentally filled the car with roughly 5 litres of 94 ethanol e10. I quickly realised and stopped, and filled up the car with 98 octane. My question is... do I need to get the petrol drained from the car?

The car was empty when I first started filling up.

I am concerned with the injectors

Welcome to our forum, there, Jp8802 -

Your car will be OK, not to worry.

Just pay attention next time -

humfrz · 08-23-2020, 02:31 AM

Quote:

Originally Posted by Kaotic Lazagna

Doesn't it say that using lower grade fuels can cause knocking?

Kaotic Lazagna, you have been around long enough to know about that. Damn, iffen your short term memory is that bad - refresh it - look it up.

Oh, wait - maybe you are just trolling ol @Tcoat -

Kaotic Lazagna · 08-23-2020, 04:34 AM

Quote:

Originally Posted by Tcoat

The manual says minimum 91. His 94 is our 91. It is a total non issue. Even the drop in performance is almost non existent for street driving.
We can run 89 for brief periods without harm as well but I wouldn’t use it all the time and the drop in performance is noticeable.
There are many people that can’t even get anything more than 91.

I assumed their 94 was our 87. I'm sure that what ever he got is better than the 91 we get in California

Kaotic Lazagna · 08-23-2020, 04:35 AM

Quote:

Originally Posted by humfrz

Kaotic Lazagna, you have been around long enough to know about that. Damn, iffen your short term memory is that bad - refresh it - look it up.

Oh, wait - maybe you are just trolling ol @Tcoat -

Wait, what am I missing. I wasn't trolling this time.

JD001 · 08-23-2020, 04:54 AM

I would be worried if you poured diesel into the tank.. Petrol grades can be variable so no great shakes if you go up or down on octane levels..

DarkPira7e · 08-23-2020, 10:56 AM

As has been already said, you'll be fine- ECUs are wildly intelligent.
You wouldn't believe the variances in the fuel you're getting, but you don't need to worry about it; the ECU has your back. As long as it's not diesel or water..

08-23-2020, 12:53 AM	#1
Jp8802 Junior Member Join Date: Aug 2020 Drives: Toyota 86 GTS Location: Australia Posts: 3 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I put wrong fuel in 86 gts Hey guys, I own an 86 gts, 2 yrs old now. I live in Sydney Australia. Today I accidentally filled the car with roughly 5 litres of 94 ethanol e10. I quickly realised and stopped, and filled up the car with 98 octane. My question is... do I need to get the petrol drained from the car? The car was empty when I first started filling up. I am concerned with the injectors

08-23-2020, 02:02 AM	#4
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,845 Thanks: 61,656 Thanked 108,283 Times in 46,456 Posts Mentioned: 2495 Post(s) Tagged: 50 Thread(s)	100% ok. If you check your manual you will see that 98 is recommended but 94 is required. You can even use 91 now and then with no ill effects other than a drop in performance. __________________ Racecar spelled backwards is Racecar, because Racecar.

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08-23-2020, 02:05 AM	#5
Kaotic Lazagna Senior Member Join Date: Apr 2014 Drives: GR Corolla Location: Lathrop, CA Posts: 4,926 Thanks: 3,087 Thanked 3,017 Times in 1,859 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	Probably should try to avoid driving it hard until you use up all the fuel or have mixed in enough premium in to actually have a 98 in the tank just to be safe. I'm sure the computer is compensating for the lower octane, but it doesn't hurt to play it safe.

08-23-2020, 04:54 AM	#13
JD001 Senior Member Join Date: Apr 2015 Drives: Subaru BRZ Location: UK Posts: 6,028 Thanks: 7,652 Thanked 6,187 Times in 3,474 Posts Mentioned: 25 Post(s) Tagged: 2 Thread(s)	I would be worried if you poured diesel into the tank.. Petrol grades can be variable so no great shakes if you go up or down on octane levels..

08-23-2020, 10:56 AM	#14
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 3,934 Thanks: 3,200 Thanked 4,095 Times in 2,045 Posts Mentioned: 31 Post(s) Tagged: 0 Thread(s)	As has been already said, you'll be fine- ECUs are wildly intelligent. You wouldn't believe the variances in the fuel you're getting, but you don't need to worry about it; the ECU has your back. As long as it's not diesel or water..

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