Club Cobra - 93 Octane or better?

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93 Octane or better?

Does anyone in the OKC area know where to find 93 octane or higher gas only (pure gasoline) in recent times? I have Googled and seen old info on a Shell station at 50th and Western, but didn't know if that is still accurate.

James

There is 91 & 93 octane pure gas at the new Phillips 66 on the South side of Memorial, between Portland and May in North OKC. No pure gas at 50th & Western.

Why does it need to be pure gas?

Jeff
My understanding is that the blended fuels can cause issues with the inside of carbs getting gunked up or dirty. Some have also mentioned that there might be an increase of possible issues with "vapor lock" with blended fuels. Here is a couple of the previous threads that discusses the subject.

http://www.clubcobra.com/forums/all-...amaged+blended by Wbulk
http://www.clubcobra.com/forums/holl...ise-speed.html by Dangerous Doug with help from Patrickt

Not sure if this site helps, but it may.

Ethanol-free gas stations in OK

Dan

James,
You might want to check the 93 in your area for ethanol / alcohol content. All the 93 octane I have checked locally (Waco, TX) does not contain any alcohol / ethanol.
Jody

Here is the method I use to check the ethanol content:

The logic is that ethanol will mix with water and separate from gasoline and you can see the separation very well, especially in a glass container.

It is first helpful to make some graduation marks on the container with a magic marker. Make them at 90 and 91 CC, and 9 and 10 cc. A tall container like an olive bottle works well.

I used a glass container and filled it with with 90 cc of water, added 10 cc of 93 octane gas, shook it up, let it settle a bit and read the numbers. With the 93 octane, I ended up with just what I put in the container....90 cc of water and 10 cc of 93 octane.

When I tried the same procedure with 91 octane....as well as 87 octane....I came up with what I think is a 10% ethanol blend.

I started off with 90 cc of water, then added 10 cc of 91 octane, shook it up and when it settled, I had 91 cc of water and 9 cc of gas or a 10% loss in the quantity of gas I put in and a corresponding gain in the water as the ethanol mixed with it.

The same 10% ethanol mix numbers showed up with 87 octane gas.

The method is very primative, but I think it works.

Jody

There's a Sinclair on 23rd and Douglas in MWC (9301 NE 23rd St, Oklahoma City, OK 73141) that has 93 and 110. Its called Mcdonalds Sinclair. I think it's one of the last full service stations around.