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Old 08-12-2005, 12:19 AM   #1
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gts on 87 octane

these gas prices are startin to break my pocket, has any one tried puttin 87 octane fuel into their gts engine? out come? mayb 89 instaid?
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Old 08-12-2005, 12:25 AM   #2
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Poorer(sp) mileage, less power and a case of the knocks. You knew the thing took the good stuff when you bought it don't try to get cheap now.
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Old 08-12-2005, 04:05 AM   #3
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Quote:
Originally Posted by Pulsar1
Poorer(sp) mileage, less power and a case of the knocks. You knew the thing took the good stuff when you bought it don't try to get cheap now.

You can damage the engine by running lower octane gas.



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Old 08-12-2005, 05:27 AM   #4
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Old 08-12-2005, 05:33 AM   #5
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I wonder if you can play with the ignition to run lower octane on a PFC lol.....Not that I'm going to try it lol.
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Old 08-12-2005, 06:25 AM   #6
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Quote:
Originally Posted by Nova_gts
these gas prices are startin to break my pocket, has any one tried puttin 87 octane fuel into their gts engine? out come? mayb 89 instaid?

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.
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Old 08-12-2005, 06:44 AM   #7
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less beer... NOOOO
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Old 08-12-2005, 06:57 AM   #8
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when i first bought my gts, i put 87 in it for about a month until i was told, "you're a freaking idiot!!! put 93 in there!" after i put 93 in, i started getting a little worse gas mileage actually, so i dont know where some of you are getting your numbers from. However my car sounded much better on the higher octane, a whole lot healthier, so i stick with it. It also brought my ET down at the track
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Old 08-12-2005, 07:29 AM   #9
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Use water instead of gas. You'll save yourself a whole lot of money. Haha .
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Old 08-12-2005, 07:33 AM   #10
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Use ethanol instead of gas. You'll save yourself a whole lot of money. Haha .
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Old 08-12-2005, 08:16 AM   #11
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Use water instead of gas. You'll save yourself a whole lot of money. Haha .

hahahahaha
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Old 08-12-2005, 09:20 AM   #12
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i was just asking, i never have put 87 in, my dad whos an engineer keeps tellin me day aftr day to switch, cutting out news paper articles that say theres no diff... and really the ecu should even it out, but i like to push my car so ima stick to 93
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Old 08-12-2005, 09:24 AM   #13
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Quote:
Originally Posted by Nova_gts
i was just asking, i never have put 87 in, my dad whos an engineer keeps tellin me day aftr day to switch, cutting out news paper articles that say theres no diff... and really the ecu should even it out, but i like to push my car so ima stick to 93
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.
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Old 08-12-2005, 10:02 AM   #14
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Quote:
Originally Posted by harrison888
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.
Wow, I wish premium was 2.59 here. At some places, it's 2.98. ****ing 2.98! Can you believe that ****.
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Old 08-12-2005, 10:27 AM   #15
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Two nights ago the gas station ****ed up and I got premium for 2.31 instead of 2.59!!! go me
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Old 08-12-2005, 11:14 AM   #16
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Quote:
Originally Posted by Nova_gts
i my dad whos an engineer
What kind of engineer? Not all engineers are knowledgeable about all topics. I'm a chemical engineer; I don't build bridges. I would say, if your dad is so adamant about you switching, do so, but tell him when you destroy your motor, you want him to replace it.

On a side note, apparently prices are anticipated to come back down, due to /barrel cost reducing to less than $65/ea.
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Old 08-12-2005, 11:20 AM   #17
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Quote:
Originally Posted by InSw1tchedFlame
when i first bought my gts, i put 87 in it for about a month until i was told, "you're a freaking idiot!!! put 93 in there!" after i put 93 in, i started getting a little worse gas mileage actually, so i dont know where some of you are getting your numbers from. However my car sounded much better on the higher octane, a whole lot healthier, so i stick with it. It also brought my ET down at the track

^^^check ur owners manual it says you need 93 in there for a gts.....
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Old 08-12-2005, 11:22 AM   #18
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Quote:
Originally Posted by InSw1tchedFlame
when i first bought my gts, i put 87 in it for about a month until i was told, "you're a freaking idiot!!! put 93 in there!" after i put 93 in, i started getting a little worse gas mileage actually, so i dont know where some of you are getting your numbers from. However my car sounded much better on the higher octane, a whole lot healthier, so i stick with it. It also brought my ET down at the track
It gets worse mileage.
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Old 08-12-2005, 11:23 AM   #19
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Originally Posted by Gundam Whang
Use water instead of gas. You'll save yourself a whole lot of money. Haha .
my gts just runs off of pee but the only downside is i get all cut up!!
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Old 08-12-2005, 11:26 AM   #20
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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!)
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Old 08-12-2005, 11:28 AM   #21
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Originally Posted by NoRulzAt140 Mph
It gets worse mileage.
then dont drive all around town in first gear because u have better gas in the car
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Old 08-12-2005, 11:32 AM   #22
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Quote:
Originally Posted by InSw1tchedFlame
when i first bought my gts, i put 87 in it for about a month until i was told, "you're a freaking idiot!!! put 93 in there!" after i put 93 in, i started getting a little worse gas mileage actually, so i dont know where some of you are getting your numbers from. However my car sounded much better on the higher octane, a whole lot healthier, so i stick with it. It also brought my ET down at the track
I did the same thing however, the only thing I really noticed was the gas mileage was a little better. Now I put 93 in.
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Old 08-12-2005, 02:05 PM   #23
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There is also a higher sulfer content in regular that doesn't play well with the MMC sleeves in a GTS.
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Old 08-12-2005, 04:21 PM   #24
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Quote:
Originally Posted by marc
Quote:
Originally Posted by Gundam Whang
Use ethanol instead of gas. You'll save yourself a whole lot of money. Haha .
.
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Old 08-12-2005, 08:46 PM   #25
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i wish we got 93...max. ive seen is 91...boooo
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Old 08-12-2005, 08:51 PM   #26
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Originally Posted by milesplume
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!!
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Old 08-12-2005, 08:59 PM   #27
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My fuel lid says 91 octane only, see owners manual.
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Old 08-12-2005, 11:09 PM   #28
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Quote:
Originally Posted by milesplume
Quote:
Originally Posted by NoRulzAt140 Mph
It gets worse mileage.
then dont drive all around town in first gear because u have better gas in the car
WTF are you talking about?
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Old 08-13-2005, 01:38 AM   #29
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Gas prices are very high in Southern CA.

87 octane - $2.73
89 octane - $2.83
91 octane - $2.93
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Old 08-13-2005, 01:55 AM   #30
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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
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Old 08-13-2005, 10:38 AM   #31
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^^^holy ****!!!
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Old 08-13-2005, 11:06 AM   #32
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spend the 30 cents extra now for premium...unless your putting that money aside for the new motor your gotta need after blowing yours up from runnin 87
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Old 08-13-2005, 11:07 AM   #33
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btw my dad in hawaii pays like $4.36 a gallon.
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Old 08-13-2005, 08:33 PM   #34
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damn thats expensive, but i don't get into the whole complaining over prices, just cuz when it comes down to it, we aren't riding bikes yet, we still hit the pump every 7 to 10 days, complaining with no action is worthless. plus even when G-Dubya(no problem with him) isn't in office prices are gonna stay this high, so oh well~
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Old 08-13-2005, 08:36 PM   #35
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Old 08-13-2005, 08:42 PM   #36
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Quote:
Originally Posted by harrison888
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.
not to mention you will get ****tier gas milage, but the car will automatically retard ignition timing to reduce knock or atleast it should.
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Old 08-13-2005, 09:35 PM   #37
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Quote:
Originally Posted by milesplume
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...
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Old 08-13-2005, 09:37 PM   #38
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Quote:
Originally Posted by Zero
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
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Old 08-13-2005, 10:05 PM   #39
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Originally Posted by prometheum
what if you live in a place that doesnt offer 91
there must be something equivalent to 91 octane.
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Old 08-13-2005, 11:31 PM   #40
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Quote:
Originally Posted by Zero
there must be something equivalent to 91 octane.
no there isnt we get 90 octane
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Old 08-14-2005, 03:31 AM   #41
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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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Old 08-14-2005, 05:36 AM   #42
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I didn't notice any power difference because there was no power there to begin with.




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Old 08-14-2005, 07:56 AM   #43
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Quote:
Originally Posted by prometheum
Quote:
Originally Posted by milesplume
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.
Quote:
Originally Posted by prometheum
Quote:
Originally Posted by Zero
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
If there is no equvalent, then buy octane booster.
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Old 08-14-2005, 10:33 AM   #44
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Quote:
Originally Posted by NoRulzAt140 Mph
Quote:
Originally Posted by prometheum
Quote:
Originally Posted by milesplume
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.

The stock ECU can only adjust timing so much. After that, you're on your own.



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Old 08-14-2005, 10:46 AM   #45
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Originally Posted by Gundam Whang
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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Old 08-14-2005, 02:52 PM   #46
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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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Old 08-14-2005, 08:25 PM   #47
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Quote:
Originally Posted by NoRulzAt140 Mph
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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Old 08-14-2005, 08:27 PM   #48
NoRulzAt140 Mph
 
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Quote:
Originally Posted by prometheum
Quote:
Originally Posted by NoRulzAt140 Mph
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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Old 08-14-2005, 09:24 PM   #49
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Quote:
Originally Posted by Nova_gts
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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Old 08-14-2005, 10:05 PM   #50
TRD S'Charger
 
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Quote:
Originally Posted by prometheum
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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