[Captain of the Titanic]

Why do it? You get less MPG per dollar than regular gasoline (which BTW in many cases is E90). With the price of gas falling, all that cash just doesn't make sense.

Here in North Dallas, The price of gas (low price) is 2.29/gallon, and Kroger will give you .10 off per gallon if you spend $100 on groceries. I have a charge card that gives me 5% cash back on gas, which means I'm paying a net of $2.08/gallon.

I would wait and see if gas keeps going down.

If you really want better gas mileage, I suggest headers, true dual exhaust (dual cats/mufflers) with 3" pipes and a free flow air filter. I have had good luck with this setup. I plan to do it on my new H2 as soon as my wife gets over the new rims and tires....

Good Luck!