Nissan 370Z Forum - View Single Post - Is ethanol free that much of a difference...

2011 Nismo#91 · 03-10-2011, 12:34 PM

Ethanol contains 2/3 the energy per unit volume when compared to normal gasoline.
A gallon of ethanol has the same energy as about 2/3 a gallon of gas.
So if you use %10 Ethanol gas then your effectively only getting 90% gas + 10%*2/3 =96.6%

And your MPG will go from for example 25MPG to 25*96.66% = 24.166MPG small but noticeable.

But that's if they don't cheat and give you a little more then just 10% ethanol.
If there's no label "E10" there should be no ethanol in the gas.

03-10-2011, 12:34 PM	#25 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,401 Drives: slowly Rep Power: 40569	Ethanol contains 2/3 the energy per unit volume when compared to normal gasoline. A gallon of ethanol has the same energy as about 2/3 a gallon of gas. So if you use %10 Ethanol gas then your effectively only getting 90% gas + 10%2/3 =96.6% And your MPG will go from for example 25MPG to 2596.66% = 24.166MPG small but noticeable. But that's if they don't cheat and give you a little more then just 10% ethanol. If there's no label "E10" there should be no ethanol in the gas. Last edited by 2011 Nismo#91; 03-10-2011 at 12:37 PM.