Gas Premium or regular? - Page 17 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FatFree · 05-16-2015, 10:40 PM

Quote:

Originally Posted by Vincenttam

Cooling and heating meaning when a car is off? Thats the sound of the metals in your car shrinking because they're getting cooler. Knocking in your car with low octane has sounds like someone hammering your engine while your driving. Not the most attractive sounding bit and your car's performance diminishes.

Yeah, when the car is off after driving it for a while it makes a knocking noise every couple minutes or so. Like the sound of a single hammer tap. I'm assuming this is the cooling of the metals. But it will also sometimes make the same noise when I'm idling.

Koa · 05-16-2015, 11:02 PM

it's very hard to hear with all the other road noise.. therefore listening is not enough.

Packofcrows · 05-16-2015, 11:15 PM

Quote:

Originally Posted by FatFree

Sorry to revive this thread but I couldn't find anything about using 90 octane gas.

It seems that many people believe that using as low as 91 octane is just fine. There's an ethanol free station by my work but they only offer up to 90 octane. I just filled up with the 90 octane ethanol free to give it a try and my car is sooooo much quieter during idle. As far as I can tell from my butt dyno there is no loss in performance either.

Should I just be safe and continue to use the 92 octane gas at shell and try to ignore the crickets? Or would it be ok to use the 90 octane ethanol free? The ethanol free would also cost me about $25 more a month. The crickets really don't bother me that much but it's so nice to have silence while at a stop light...

89, 91..whatever ...etc fine. Just make sure you dont mind crickets or other issues arising sooner or later.

Just use premium (93?). I've had no issues besides seeming harder to accelerate using cheapest gas (Arco and Shell 89's). I use Chevron premium otherwise.

Maybe its me because i'm fat?

Ethanol sucks @ss. I ran 89, 20%???? ethanol on my 90 pickup and that made it develop some sort of cricket! Ran higher medium, no problems.

Tcoat · 05-17-2015, 12:22 AM

As said before 93 recommended 91 minimum required as per the manual

Packofcrows · 05-17-2015, 01:15 AM

Quote:

Originally Posted by Tcoat

As said before 93 recommended 91 minimum required as per the manual

^^^^

What Flanders said.

chaoskaze · 05-17-2015, 02:56 AM

I wish I live at a place with 93. Damn u Cali

1GiantTurtle · 05-17-2015, 05:03 AM

Quote:

Originally Posted by chaoskaze

I wish I live at a place with 93. Damn u Cali

we have 100 here so i guess thats okay

chaoskaze · 05-17-2015, 07:05 AM

Quote:

Originally Posted by 1GiantTurtle

we have 100 here so i guess thats okay

we have it here too.. but it's not like 3x the price of 91 is right. lol + i'm at like 2500 ft!

FRSBRZGT86FAN · 06-14-2015, 02:14 AM

Quote:

Originally Posted by Tcoat

As said before 93 recommended 91 minimum required as per the manual

I like the way the manual words it basically says only put 91 in if the world is ending I sadly can't do that now because racecar tune lol

Sent from my A0001 using Tapatalk

stevesnj · 06-27-2015, 12:19 PM

So i got this from the Toyota Japan site, maybe this will end the debate, or spark more... You can use regular it seems.

http://toyota.jp/86/spec/

Tcoat · 06-27-2015, 06:59 PM

Quote:

Originally Posted by stevesnj

So i got this from the Toyota Japan site, maybe this will end the debate, or spark more... You can use regular it seems.

http://toyota.jp/86/spec/

Have to be careful when using materials from other regions of the world. What they call "regular" may well be our 91 (I am too lazy to check). I don't know how there can be any debate on this subject anyway as the manual is clear that 93 is recommended (as in it is better but not needed) but a minimum of 91 is required (as in don't go lower). There is no grey area here and that is about as clear as anybody could make it.

D_Thissen · 06-27-2015, 07:08 PM

Just follow what the book (or your specific tune) says to follow. So in this case, at least 91 (or its equivalent).

Spectral Entity · 06-29-2015, 07:52 PM

I'm curious if anyone else here runs 100% gasoline?

The station I use has 100% pure gas in 87 and 93 octanes, and an 87 blend.

I've been using the 93, of course, and have been impressed with the mileage - I've been averaging 33mpgs!!

D_Thissen · 06-29-2015, 08:06 PM

We can get 91, anything above that (93/94) is E10.

05-17-2015, 12:22 AM	#228
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,294 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	As said before 93 recommended 91 minimum required as per the manual __________________ Racecar spelled backwards is Racecar, because Racecar.

06-27-2015, 12:19 PM	#234
stevesnj Senior Member Join Date: May 2013 Drives: 2016 FR-S Oceanic Blue Location: Southern NJ Posts: 2,958 Thanks: 2,158 Thanked 1,601 Times in 923 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	So i got this from the Toyota Japan site, maybe this will end the debate, or spark more... You can use regular it seems. http://toyota.jp/86/spec/ Attached Images __________________ My 2016 Build thread TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete

06-27-2015, 07:08 PM	#236
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	Just follow what the book (or your specific tune) says to follow. So in this case, at least 91 (or its equivalent). __________________ My FR-S Build IG: dthissen

06-29-2015, 08:06 PM	#238
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	We can get 91, anything above that (93/94) is E10. __________________ My FR-S Build IG: dthissen

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