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E10 gas and advanced timing...


Nater

Nater

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So AAFES decided that they are only going to supply E10 on base, as well as most places off post. Been doing some reading online and it seems that most places in the states like MO are E10 too...So I have a 2 part question....first, how safe is it to constantly run? Second, as my understanding goes, E10 is less prone to detonation...if that is the case, can you advance timing 1 or 2 teeth?
 


greenpus

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I've been running E10 in all my vehicles since the 1970's. Absolutely no problems in the vehicles except lower gas mileage. People will claim the world is coming to an end with E10 and bitch about it but I have no serious complaints.
With E10 you have to make sure fuel is always fresh and anything over 3 to 6 months old may have separated which means the alcohol/water/gas separated and this will cause an issue. I will worry a little when they move to E20 in the next few years. History has shown that anything above E15 can be more corrosive on soft metals in the fuel delivery system it will suffer. Older vehicles that have soft metals such as older carbs and non-stainless steel fuel lines may have problems. Since E10 has alcohol in it, it is pointless to use most fuel additives that you buy in the auto stores. most of those have alcohol and E10 already has that. Just be on the lookout for those additives like HEET and a lot of other fuel system cleaners that contain alcohol
 
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Nater

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cool....so what about advancing timing?
 
James86

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Chances are, since they're adding the ethanol, theyre using slightly lower quality gas and gettign away with it. Thats why it's still 87 octane, 89 octane, etc. I doubt there's enough a difference to warrant changing your timing since the octane is still the same.
 
greenpus

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Nater said:
cool....so what about advancing timing?
Click to expand...
i wouldn't change it because the E10 gas is still reg 87 octane.
Germany might be on a different octane rating system.
87 octane in the states ((R+M)/2) is the same as 91 octane (RON) in Europe.
91 octane in the states is the same as 95 in Europe.
 
Nater

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Over here you can no longer get 91 Octane (Ron) here...It is 95 or 97.
 
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