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Old 08-06-2009, 02:38 AM   #1
sti4rs
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Default Ethanol

I wanted to post this to SCCAForums.com but when I create an account I never get the email with my password. Anyways, I have posted other questions here so I thought I would post this non-impreza and more general autocross question.

So I am changing classes to run in Street Prepared. My question is, can you run Ethanol in Street Prepared? The quick answer is yes, you can run E85, but what about a higher level of ethanol? How about 90% ethanol? How about 86%? How about 100%? 99%? How do you tell how much ethanol is contained in the "E85" we buy at the station?

My local service station has a sign on the E85 pump that says "contains at least 70% ethanol," but what if it contains more? What if I buy E85 that contains more that 85% ethanol?

I heard our local drag strip allows E85 but expressly disallows E95. Not sure if this is true, but how do you tell/test?

I dont want to be bumped class or disallowed to race if I run more ethanol than that available in E85. I say disallow because SP allows the same fuel as Mod and Prepared, therefore if its not allowed in SP then its not allowed at all.

Here are the rules I found that apply.

3.6 FUEL
A. Stock and Street Touring Class vehicles will use service station
pump fuel only. Pump fuel is defined as that which is “Federally
approved for use on public highways.” This includes the pump
fuel known as “E85, but does not allow racing-type fuels which
are available at service station pumps.
B. In addition to fuels which are allowed by 3.6.A, Street Prepared,
Street Modified, Prepared, and Modified class vehicles may use
diesel fuel or any grade of gasoline. Gasolines consist entirely of
hydrocarbon compounds. Gasoline may contain antioxidants,
metal deactivators, corrosion inhibitors and lead alkyl compounds
such as tetraethyl lead. Oxygen and/or nitrogen bearing additives
are prohibited, except for those originally present in service
station pump fuel. Oxygen and/or nitrogen bearing oil additives
are prohibited in two-cycle engine oiling systems.
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Old 08-13-2009, 01:34 PM   #2
thunderbird
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the rules are straight forward. if they don't allow it specifically, its not allowed. E-85 is specifically mentioned, Gasolines are specifically mentioned, alcohols are not mentioned.
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Old 08-13-2009, 02:18 PM   #3
sti4rs
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Quote:
Originally Posted by thunderbird View Post
the rules are straight forward. if they don't allow it specifically, its not allowed. E-85 is specifically mentioned, Gasolines are specifically mentioned, alcohols are not mentioned.
Not so fast, I found out that it is “Federally approved for use on public highways." It can also be used as a diesel.
E95 FTW
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Old 08-13-2009, 02:22 PM   #4
mccanixx
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Are there hydrocarbons in ethanol/methanol?

I don't know that's why I'm asking.
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Old 08-13-2009, 02:24 PM   #5
sti4rs
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Quote:
Originally Posted by mccanixx View Post
Are there hydrocarbons in ethanol/methanol?

I don't know that's why I'm asking.
Not sure
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Old 08-13-2009, 11:26 PM   #6
speedyHAM
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Quote:
Originally Posted by mccanixx View Post
Are there hydrocarbons in ethanol/methanol?

I don't know that's why I'm asking.
Ethanol and Methanol are made up of hydrocarbon chains. They are almost the definition of a typical hydrocarbon.
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Old 08-14-2009, 07:28 AM   #7
KC
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Quote:
My local service station has a sign on the E85 pump that says "contains at least 70% ethanol," but what if it contains more? What if I buy E85 that contains more that 85% ethanol?
The 70% sticker on the E85 pumps means that it has a MINIMUM of 70%, but a MAX of 85%. That's federal. Winter blends are 70% in some areas.

If you have E95 available from a pump, and that pump has a label on it that the gas dispensed meets Federal Highway Requirements, and federal/state taxes are taken from each gallon dispensed (a good litmus test that it's federally legal is that they TAX it), run it.

Odds are good the company that you buy this from will also have a website that the data on the fuel is posted. Got a link?

Suggestions to keep in mind to show that the fuel you bought is legal for SP.

1) Keep your receipt for your purchase. This will show that what you bought was legal as it usually puts the blend and where you bought it, and the taxes paid.

2) A fuel test would confirm the make-up of the gas. It's rather easy to take a sample.

--kC
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Old 08-14-2009, 08:43 AM   #8
griceiv
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I've sent an email to the SPAC for clarification on the fuel rule. Ethanol, methanol, MTBE are allowed in any concentration even though they are "oxygen bearing additives" due to them being "originally present in service station pump fuel".

I was specifically asking about VP MS109, which has a high concentration of MTBE.

http://www.scca.com/documents/Fastra...rack-march.pdf

there is no requirement for fuels in anything other then stock and ST to be federally approved.

Last edited by griceiv; 08-14-2009 at 09:07 AM.
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