http://www.afdc.energy.gov/uploads/p...l_handbook.pdf
During my previous research, I had found that E70 was likely the lowest % of blend I'd be seeing in a northern climate (MN), however, I've since learned that this can be as low as 51%:
The properties of ethanol for E85 and other ethanolblends must meet ASTM D4806. The ASTM specificationfor E85 is ASTM D5798 Specification for EthanolFuel Blends for Flexible-Fuel for Automotive SparkIgnitionEngines (see Table 3). The ethanol content ofE85 is seasonally adjusted to improve vehicle cold-startand warm-up performance. The ethanol content canrange from 51% to 83% by volume.
There is a table provided that shows your states volatility class by month, Minnesota is only a class 1 for ONE month a year (July) :(
So I would assume its pretty important to either have an ethanol sensor or to test your pumps E % regularly.
During my previous research, I had found that E70 was likely the lowest % of blend I'd be seeing in a northern climate (MN), however, I've since learned that this can be as low as 51%:
The properties of ethanol for E85 and other ethanolblends must meet ASTM D4806. The ASTM specificationfor E85 is ASTM D5798 Specification for EthanolFuel Blends for Flexible-Fuel for Automotive SparkIgnitionEngines (see Table 3). The ethanol content ofE85 is seasonally adjusted to improve vehicle cold-startand warm-up performance. The ethanol content canrange from 51% to 83% by volume.
There is a table provided that shows your states volatility class by month, Minnesota is only a class 1 for ONE month a year (July) :(
So I would assume its pretty important to either have an ethanol sensor or to test your pumps E % regularly.