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I used to put 87 in my old auto gt-s for the longest time. I didn't notice any power difference because there was no power there to begin with. At the time I couldn't justify putting premium in a car that can get beaten by Civics. I finally started putting in 91 when my friends screamed at me. Didn't notice any differences. With my new 6spd gt-s I have never neglected to put premium in.

I don't complain too much about our prices because other countries pay WAY more than we do. Let's face it, the prices will never go back to .79 :(
 

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prometheum said:
milesplume said:
if you all actually read your manualls then u would all know that a celica gt-s runs at min. off of 92 octane so priemium is not enough for the little champs u r all abusers!!(the less octane you use the more you will pay for it in the long run in engine damage and wear, too!)
no you are not the ecu will just retard the timing when it senses knock, and lots of places dont even offer anything higher than 91 for prenium, the highest octane gas you can ger here is 90 octane...
It will not retard it to perfection. It WILL damamge the engine. Now 90 to 91, I think it can retard it adequately.
prometheum said:
Zero said:
its in the manual book. 91 or higher for a GT-S.

if you put anything other than a rating of 91 or higher then your car deserves to crap out on you. thats just ignorance.


BTW, here is San Diego, Premium has reached $3.25
what if you live in a place that doesnt offer 91 :rolleyes:
If there is no equvalent, then buy octane booster.
 

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NoRulzAt140 Mph said:
prometheum said:
milesplume said:
if you all actually read your manualls then u would all know that a celica gt-s runs at min. off of 92 octane so priemium is not enough for the little champs u r all abusers!!(the less octane you use the more you will pay for it in the long run in engine damage and wear, too!)
no you are not the ecu will just retard the timing when it senses knock, and lots of places dont even offer anything higher than 91 for prenium, the highest octane gas you can ger here is 90 octane...
It will not retard it to perfection. It WILL damamge the engine. Now 90 to 91, I think it can retard it adequately.
:werd:
The stock ECU can only adjust timing so much. After that, you're on your own.
 

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Gundam Whang said:
If your car was a GT then it wouldn't really matter what octane gas you put it. But since yours is a GT-S, you need to put 93 in due to the engine's high compression ratio. If you use anything other than premium gas then you're basically killing your engine.
I can notice a difference in my GT when using 89 octane.Mainly its when I'm starting from a stop,using 89 I can pretty much start off from idle where as using 87 it's not possible.But my next tank full will probably be 87 due to the cost savings..
 

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ok ok...i just bought a 04 gt-s friday(8/12/05 .....havent put any gas in it yet...i was wondering if the first 6,800 miles(if ran on 87) could have damaged the engine...i know it needs a new starter because the woman that bought it could not drive a standard and had to restart alot. i plan on using 93 ofcourse, just wondering what damage could have been done at this mileage...
 

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NoRulzAt140 Mph said:
It will not retard it to perfection. It WILL damamge the engine. Now 90 to 91, I think it can retard it adequately.


If there is no equvalent, then buy octane booster.
octane booster is worthless, its got poor energy density, and usually one bottle will only increase your octane rating by .1
 

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prometheum said:
NoRulzAt140 Mph said:
It will not retard it to perfection. It WILL damamge the engine. Now 90 to 91, I think it can retard it adequately.


If there is no equvalent, then buy octane booster.
octane booster is worthless, its got poor energy density, and usually one bottle will only increase your octane rating by .1
well it would help his 90 to 91 situation.
 

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Nova_gts said:
less beer... NOOOO
Words of Wisdom there.
Cali absolutely sucks for gas. The highest prices and around some of the lowest octane.

I don't really care. The Celica gets great gas mileage and if I was one to think about gas prices and $20 for the drive around for the week or less in my Celica then I would have bought a cheap Suziki crap ass. No wait, a Ford Fu-k me. No wait, a Cronda Hicckup. No wait, those cars are similar and are worse on gas. Any Dodge Hemi. Any SUV. Any Hyundai Excel and a toaster oven thrown in for being stupid.

I got it a hybrid piece of junk getting 100000 miles to the gallon, 0-60 in 20 seconds, and the battery replacement cost at 5 grand every 5-10 years, whichever comes first and not covered under warranty.

Who cares. I really don't. The topic of which octane do you use, which gas company gas is better, and doesn't gas prices suck doesn't bother me comes up all too often.

I'm still running 100 or 94 exclusive. Why, because I can, I drive a Celica. I haven't looked at gas signs in 5 years. $2.55 or a Monday special at $2.50 isn't going to get my attention. I don't need to roll pennys to get 2 gallons of gas at 30 cents cheaper or a full tank at a $1.00 cheaper.
Most of us here drive Celicas and get amazing gas mileage. Why complain.
I'm banging on 100 octane which isn't much more than Cali drivers pay for 91 cruising around. It comes out about equal.
I can almost fill my car with $25 of 94 Sunoco and go more than the week. I'm happy.
My friend has a used Dodge Ram 1500. He spends in two days on gas just to drive to work what I spend in over a week.

I use to put octane booster 108 in my 85 SR5. Did absolutely nothing.
Putting 91 Shell insted of 86 or whatever the lowest at the time made more of a difference. That I remember.

Spend the money and put the highest octane gas that you have in your area.
92-93 would be great. Read the manual.
 

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prometheum said:
octane booster is worthless, its got poor energy density, and usually one bottle will only increase your octane rating by .1
i disagree, maybe the cheap octane booster sucks, but there are good products out there that really work. i haven't used it since i sold my old mustang but i loved 104 octane boost. i suggest you try it.
 

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prometheum said:
no there isnt we get 90 octane
This made me laugh. So I guess Toyota dealers there depend on the uneducated consumer to sell the GTS? They must get prizes for every one they sell :laugh:
 

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harrison888 said:
87 octane $2.39 X 14gal = 33.46
93 octane $2.59 X 14gal = 36.26

it's really not that big of a difference, may be when you go out on the weekend, try drinking 1 less bottle of beer and you'll make the money back.
man i wish it was like that in boston here it $2.65=87octane\$2.89=93octane if your lucky.
 

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i believe the gt-s was tuned to 91 from the factory, 91-93 is needed to appease the computer's settings. middle grade (89) should suffice, if your that big of a cheepo though, you should not of bought this car.
 

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many said:
Actually the higher the engine revs less octane is needed.
:rolleyes:
GT-S_aia said:
i believe the gt-s was tuned to 91 from the factory, 91-93 is needed to appease the computer's settings. middle grade (89) should suffice, if your that big of a cheepo though, you should not of bought this car.
89 will not.
 

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many said:
NoRulzAt140 Mph said:
If you had read any books dealing on engines.....
Start with: Advanced engine technology by HEINZ HEISLER (chapter 4)
While you may be right. Thi does not apply. The GTS REQUIRES 91 + to function properly.
 
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