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  #11  
Old 09-14-2011, 08:54 PM
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Default Ethanol

I understand that the EPA, lobbyists and others in government are pushing for a 15% Ethanol content in gasoline to become the new standard instead of 10%, and some wanting an unspecified increase somewhere in-between 10-15%.

It's been argued that late model vehicles could use E-85 safely, but for most drivers on the road today, more than 10% will deteriorate fuel system seals and other components, and presumably result in a fire.

If enacted at some point in the near future, I am sure 10% would still have to be an option at gas stations. But, I sure hope legislation doesn't pass

Last edited by Dancianne; 09-14-2011 at 09:28 PM.
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  #12  
Old 09-14-2011, 09:10 PM
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A big factor also is the timing advance. The more timing the higher the octane that is required. I run 87 because Dodge says I can and I am cheap. If and when I start to play around with the engine with a tuner that advances the timing, then 89 and maybe 93 octane must be used.
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Old 09-14-2011, 09:33 PM
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If you want to search for non-ethanol gas in your area, try this site:

http://www.buyrealgas.com/
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  #14  
Old 09-15-2011, 02:04 AM
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Thats what knock sensors are for.when they sense knocking it retards the timing to a safe level.So if you put the higher grade gas in,the computer will let the timing advance up to the knocking point the back it off a bit.
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Old 09-15-2011, 08:38 AM
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Quote:
Originally Posted by DenDen View Post
Thats what knock sensors are for.when they sense knocking it retards the timing to a safe level.So if you put the higher grade gas in,the computer will let the timing advance up to the knocking point the back it off a bit.
This confirms the advice my dealer gave me. The tech said the computer starts to learn the pattern of your driving including the octane fuel you are using. He said if you use 87 then stick with it, if you use 89 stick with it... If you ever do change the best thing to do is remove your negative battery terminal for a short period of time to reset the computer so that it will begin learning the driving pattern.

With that said, I am hesitant to trust him 100% on this...
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Old 09-15-2011, 01:52 PM
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Default

Quote:
Originally Posted by Razorbass View Post
If you want to search for non-ethanol gas in your area, try this site:

http://www.buyrealgas.com/


That’s a great site but please note most places are marina’s and they sell “recreational 90 or R90” It’s 90 octane ethanol free gas for boats, 2 & 4 cycle engines, chain saws, lawnmowers etc..

It’s not for highway use. I believe it’s taxed different, plus its 100% gas and they don’t want cars using 100% gas hence 10% ethanol.

I went to 3 places and they are marina and fuel depots. My local Sunoco has R90 but the sign on the pump says not for Highway use all though, I am still inclined to pump a few gallons one day or use a gas can.
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  #17  
Old 09-15-2011, 02:41 PM
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Quote:
Originally Posted by jeman022004 View Post
This confirms the advice my dealer gave me. The tech said the computer starts to learn the pattern of your driving including the octane fuel you are using. He said if you use 87 then stick with it, if you use 89 stick with it... If you ever do change the best thing to do is remove your negative battery terminal for a short period of time to reset the computer so that it will begin learning the driving pattern.

With that said, I am hesitant to trust him 100% on this...
Pretty much the way we learned to reset the adaptives on the LX cars. We unplugged the PCM fuse, let it sit for a while, then plugged it back in and drove it like we stole it. It does change the vehicles driving characteristics...for a while. Then, as you slip back into the old routine (highway driving, stop and go in traffic, around town at low speeds) the characteristics change as we are talking an adaptive system here.

One way to stop having to pull the battery cable or the PCM fuse (It was like getting a tune up every time you did it though ) was to install a programmer. Some adaptives are over written by the program and it doesn't end up feeling like your Grandfather's Model A.
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Old 09-15-2011, 04:47 PM
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Quote:
Originally Posted by MrPEZO View Post
That’s a great site but please note most places are marina’s and they sell “recreational 90 or R90” It’s 90 octane ethanol free gas for boats, 2 & 4 cycle engines, chain saws, lawnmowers etc..

It’s not for highway use. I believe it’s taxed different, plus its 100% gas and they don’t want cars using 100% gas hence 10% ethanol.

I went to 3 places and they are marina and fuel depots. My local Sunoco has R90 but the sign on the pump says not for Highway use all though, I am still inclined to pump a few gallons one day or use a gas can.
Never noticed that Pezo so thanks for pointing it out. I only looked at the station nearest my location and it is a normal gas station for cars, trucks, etc. Never bothered to check other locations.
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Old 09-15-2011, 04:50 PM
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^ yeah all I can find anywhere near me is marina's.
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  #20  
Old 09-15-2011, 04:57 PM
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Closest station to me is 1 hr 30 min away and most are over 2 hours away :/ Gotta love Texas
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