E15 at Michigan International Speedway NASCAR

[twistedneck]

Went to the NASCAR Nationwide race today in Michigan and was happy to smell that Ethanol exhaust it smelled a lot like E85 in my Mustang w/o cats. however its only E15 that seemed kind of strange.

Is it a mix of race fuel and Ethanol?

 

[tarheeltrooper]

negative ghost rider... E15 = 15% ethanol and 85% normal gas