Looks like they thought they were aligning with national standards. From
a timeline report by that state's Renewable Fuels Commission:

"2003—Michigan State Legislature adopts and Governor Jennifer Granholm
approves property tax incentives for the manufacturing and blending of
biodiesel fuel. State legislation for mandatory labeling of 10% ethanol
blends at Michigan service station gasoline pumps is changed to be
consistent with national voluntary label standards..."

It is interesting, as I'd thought the first gasahol was 15% ethanol, but
there's no way to know whether local blends are ten, fifteen or some
random percent. Makes it hard to test performance, doesn't it?


Roger (K8RI) wrote:

In Michigan the pumps are required to have a lable. That lable states
this fuel meets Michigan quality standard something or other. Nothing
is said about Alcohol. Back in the 70s the labels stated This gas
contains 10% Ethenol or something to that effect. Maybe Denny know why
it was changed.