what gas should i use
12-29-2006, 05:56 PM
#41
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Originally Posted by VIP1
A few reasons...
* The LS1 was not designed or tuned for it.
* Read my most above, #24 (its only a brief overview)
* The LS1 was not designed or tuned for it.
* Read my most above, #24 (its only a brief overview)
01-02-2007, 07:53 AM
#42
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Originally Posted by SILVER2000WS6T/A
Is Sunoco 94 still around? It was here in New Jersey. Now all I can find is Sunoco 93. Did they stop making it?
01-03-2007, 05:46 PM
#45
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Originally Posted by BriancWS6
Where-ever you heard that, please don't EVER go back there 
I will tell you what WILL do damage though, and that's running a low octane and getting detonation. Higher octane means it's more resistant to pre-igniting. If you have too low of an octane rating for what you need, as the piston moves up on the compression stroke some of the fuel starts to ignite before the sparkplug fires, while the piston is still traveling up...NOT good.
It'll give you more power over 87 octane... if you're using a lower grade than what is suppoer to be ran in it.
The tighter the timming, the more octane you'll need in the fuel to keep it from knocking and detonating. And that dosen't meen you need c-12 soon as you do a few things either.
We have 91 only here.
The Mohawk/Husky has some 92 premium+ ethanol blend, but its not really worth it since I'm burning more compaired to 91 gasoline @ WOT.
Last edited by Rede; 01-03-2007 at 06:42 PM.
01-03-2007, 06:06 PM
#46
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Originally Posted by Runn
Why not go with E85?
Check out november's issue for the E85 review in Car Craft:
The numbers tell us the story. One gallon of ethanol is worth 76,000 btus, while gasoline is around 114,000 btus. E85 is created by adding 15% gasoline to ethanol, which ups the heat count to roughly 83,000 btus per gallon. By way of compairison, methanol generates a mere 56,800 btus per gallon, or almost exactly hlf the btus of gasoline. This meens that roughly 27% less heat output per gallon that gasoline. This is partly why we must burn around 25-30% more E85 (at WOT) compared with gasoline to achive similar results.
Because we have to burn more E85 than gasoline to make the same amount of heat in the combustion chamber, E85 is cuyrrently not the dashing hero as an alternative daily-driver fuel.
Because we have to burn more E85 than gasoline to make the same amount of heat in the combustion chamber, E85 is cuyrrently not the dashing hero as an alternative daily-driver fuel.
Ethanol fuel is also subsidizied by the government as much as 50 cents per gallon, so if ethanol fuel use increases sharply, expect 'the man' to yank the subsidy to cash in.
01-04-2007, 12:12 PM
#49
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I have had to use 89 for a few tanks of gas when I was in northwest Iowa for two weeks because there were simply no gas stations within 40 miles that had anything higher than 89. I use 94 now at the Sunoco stations and 93 at the other stations.
01-04-2007, 12:57 PM
#50
Tech Resident
Originally Posted by 1WICKDZ
91 where i am at. miss the 93 
Originally Posted by 02NHRAtransAm
nothing but 91 here (damn Ca) wish i could get 93
the only way 93 octane will benefit you over 91 octane is if your car was custom tuned and more timing was added, or you're running higher than stock compression. again, on a stock tune with stock compression, 93 octane IS NOT better than 91 octane. if you feel a difference, it's in your head. if you see a difference in mpg, it's because you were specifically looking for a difference and driving accordingly to make the difference happen.
so many people have no idea what octane is. run 91 octane. if it is not available, run 93 octane. nothing less than 91 - EVER, unless you have absolutely no choice because it's not offered.
as for Spoyld029, you're totally wasting your money using 94 octane. there's no point to it. there's a ~$0.20/gallon difference between 91 and 94 octane. it's pointless.
01-04-2007, 01:12 PM
#52
Originally Posted by ChocoTaco369
i hate statements like this because there is no truth to it. octane is NOT a power adder, it's a combustion retardant. your car on a stock tune WILL NOT fair ANY better on 93 octane than 91 octane. 91 octane has a higher energy content than 93 octane since less combustion retardant is used. this means that there is actually a HIGHER energy potential in 91 octane than 93 octane on a stock tune.
the only way 93 octane will benefit you over 91 octane is if your car was custom tuned and more timing was added, or you're running higher than stock compression. again, on a stock tune with stock compression, 93 octane IS NOT better than 91 octane. if you feel a difference, it's in your head. if you see a difference in mpg, it's because you were specifically looking for a difference and driving accordingly to make the difference happen.
so many people have no idea what octane is. run 91 octane. if it is not available, run 93 octane. nothing less than 91 - EVER, unless you have absolutely no choice because it's not offered.
as for Spoyld029, you're totally wasting your money using 94 octane. there's no point to it. there's a ~$0.20/gallon difference between 91 and 94 octane. it's pointless.
the only way 93 octane will benefit you over 91 octane is if your car was custom tuned and more timing was added, or you're running higher than stock compression. again, on a stock tune with stock compression, 93 octane IS NOT better than 91 octane. if you feel a difference, it's in your head. if you see a difference in mpg, it's because you were specifically looking for a difference and driving accordingly to make the difference happen.
so many people have no idea what octane is. run 91 octane. if it is not available, run 93 octane. nothing less than 91 - EVER, unless you have absolutely no choice because it's not offered.
as for Spoyld029, you're totally wasting your money using 94 octane. there's no point to it. there's a ~$0.20/gallon difference between 91 and 94 octane. it's pointless.
01-31-2007, 07:18 PM
#56
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Only 91 Octane out here. Learned from a guy that sold VP Racing fuel that over the counter fuels from the Big Oil Guys was tested a few years ago, right after Cali required that reduced octane (93 to 91) be sold, and Unocal 76 was still at 93, though the pump read 91. Seems they didnt want to reformulate...Im not sure if that was a temporary thing, and its since been reduced. Or he was full of BS. Dunno, but I use primarily Unocal 76 since then. As for the difference between 87 and 91 octane. You will see a difference in how the car performs and runs. Years ago, my wifes V6 Camaro, and also her Lexus RX300 were both supposed to run on 87 octane. Says the dealer and the manual. Not! Service engine lights came on both; the RX300 on two different times. The V6 ran fine on 89 octane, and the RX300 isnt happy unless its got 91. Its sluggish, and idles funny on 89.
01-31-2007, 07:34 PM
#57
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I run midgrade. which is 89 and my cars been running fine. I have a few friends who work at GM and in auto shops and they told me that Premium would eventually burn out the spark plugs and midgrade would give the same performance, that the whole 93 thing is a myth
01-31-2007, 08:09 PM
#58
Tech Resident
Originally Posted by 5PONT7
I run midgrade. which is 89 and my cars been running fine. I have a few friends who work at GM and in auto shops and they told me that Premium would eventually burn out the spark plugs and midgrade would give the same performance, that the whole 93 thing is a myth
01-31-2007, 11:33 PM
#60
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Dude I can't even believe some people ask this. If you have a high performance car that is factory tuned to run 91+ octane then do it. I used to run 87 in my old turbo eclipse and switched to 93 and noticed an IMMEDIATE change in performance. Stick the expensive stuff. It's an expensive car to have...might as well bite the bullitt..