And Brandon expanded it to 15% ethanol per gallon. It cannot be used it in a vehicle older than 10 years.
It can but not very efficiently. Which means less fuel mileage and power. And it will eat older O rings and gaskets.
And it is a simple rule of thumb. The more you have to put in the front end, the more that will come out the rear end.
So they are defeating their own purpose with all this climate crap. It is all about money and control...