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Author
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Topic: Ethonal bad for a mod'd car?
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04DropTopGT
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Member # 5934
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posted
 
 
hey guys, i went to a shell gas station about 20 min ago and a little sticker said this gas MAY contain 10% ethonal.
First off i put about 1 gal in, then stoped. I'll get gas some where else tomorrow.
But i was wondering with my mods and tune will this stuff hurt my car? And what is it supposed to do????
if i start using that stuff vs. others that dont have ethonal will it matter?
I have a CAI, 70mm T/B, Plennum, pro chamber, mac cat back, FRPP D/S, 3.73's and a diablo predator with a tune from a local shop.
Posts: 30 | From: Sacramento | Registered: Aug 2005
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Hungry Hippo
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Member # 537
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posted
all gasoline has ethenol now
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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AJBlackGT
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Member # 3936
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posted
From my understanding and conversations with a couple people, Ethanol needs has a different stoichiometric burning point than gas and needs to be run richer. This may cause issues with your current tune up. I just popped a piston and cometic headgasket in my blower car that was tuned on pump gas with no problems. Made 15 pulls, air/fuel was pretty good, no detonation, took it out on the street and bang. Don't know if it was related to the ethanol in the gas, or just a bad batch of 91, but I will be mixing race gas from now on.
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90 Notch
Posts: 1896 | From: Sacramento | Registered: Dec 2003
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JohnB
Tech Moderator
Member # 969
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posted
10% Ethanol isn't going to make much difference. You'll be fine.
As for poppin' a HG...either the tune was incorrect or the conditions from the tune changed. Meaning, it was tuned in 70* weather and it changed to 90* or a part failed.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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