My M62 E85 car will wax the floor vs most TVS cars on gasoline...
12-08-2009, 03:14 PM
#257
This info should be in this thread.
Per federal (DOE) specifications E85 does change the % ethanol vs hydrocarbon by season. The purpose of this is to raise the Reid Vapor Pressure of the fuel for cold starts in flex fuel vehicles (FFV's)- this is done by increasing the % hydrocarbon (gas component) as colder temps are expected.
Here are the normal months changes begin to happen as one moves thru the seasons and the final blend % alcohol for Wisconsin's lattitude;
Sept 1st to Oct 31st - 78%
Nov 1st to March 31st - 70%
April 1st to May 15th - 78%
May 16th to Aug 31st - 83%
(% alcohol is stated in pure terms w/o denaturing gas-- thus the Summer E85 is 85% denatured ethanol but only 83.3% pure 200 proof booze). The months stated above will generally see changes happen near the first day of the month (except May and Sept) unless the weather is holding steady.
Per federal (DOE) specifications E85 does change the % ethanol vs hydrocarbon by season. The purpose of this is to raise the Reid Vapor Pressure of the fuel for cold starts in flex fuel vehicles (FFV's)- this is done by increasing the % hydrocarbon (gas component) as colder temps are expected.
Here are the normal months changes begin to happen as one moves thru the seasons and the final blend % alcohol for Wisconsin's lattitude;
Sept 1st to Oct 31st - 78%
Nov 1st to March 31st - 70%
April 1st to May 15th - 78%
May 16th to Aug 31st - 83%
(% alcohol is stated in pure terms w/o denaturing gas-- thus the Summer E85 is 85% denatured ethanol but only 83.3% pure 200 proof booze). The months stated above will generally see changes happen near the first day of the month (except May and Sept) unless the weather is holding steady.
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