I use it in my Dodge Ram and I get better mileage. I don't use it in the Maxima as I can only find 87 octane. Pure gas will burn better in the engine than it will with ethanol mixed in.

 

It's more for small motors like lawn mowers and weed eaters. Some guys will also swear by it for their boats. But in modern cars it's not really worth the extra cash. As also noted, you'd also need an Octane boost with every fillup. Just not worth it. Every 40,000 miles you can do an induction cleaning service for around $100 that will resolve buildup caused by Ethanol. But that said, if you were straight ethanol-free the life of the car, you would find there is still buildup inside the combustion environment.

 

Ethanol is very corrosive to plastic and rubber parts but it's very high octane, thats why a lot of people who modify their cars with boost tune their cars FOR e85. However, it cleans your valvetrain much better than normal fuel without ethanol. My car is tuned for 93 octane and I have methanol injection which helps cool the motor and boosts octane so the motor can use more timing without engine knock to boost power. If I were able to look at my valves I would bet they are much cleaner than a stock motor with the same miles.

 

To build on this info--there are more BTUs in pure gasoline which should make the mpg yield around 10% better. About the 10% ethanol blend ratio we see in regular gas. You have to be away from larger metro areas to get the 100% fuel which is usually sold as a premium designation. In older cars, there is a definite improvement but with the modern computer engine controls, not a lot of difference unless you are a throttle slammer.

 

 

Excuse me?

Say the guy who sits typing at the dinner table, whilst having his dinner?

 

"There is a difference between states on whether premium gas specifically has ethanol in it or not. Or, more correctly, whether it's required to have it in it. Two states in the Union, Missouri and Montana, have specific exemption to allow ethanol-free premium gasoline. So if you live in one of those two states, you can be thankful.

For the rest of us, we are faced with the unpleasant reality that the refineries are all but tied into putting ethanol in premium gas. This is because they have to use the ethanol to raise the octane level of their gasoline blend in order to satisfy the higher octane requirements of premium. This is one reason why you don't get better gas mileage with premium gas, because an essential part of that blend is a component that has less energy and forces the gas mileage down simply by nature.

So don't get fooled into thinking you can escape ethanol's grasp simply by paying more and getting premium gas."

https://www.bellperformance.com/blog...-ethanol-in-it

 

 

 

I have bought ethanol free premium in IA, MN, IL and KY.

 

Great link for Pure gas

pure-gas.org

 

Right, but it was likely along side Premium with up to 10% ethanol. Point being to get premium without ethanol is not at every pump/station that sells premium. It has to be designated as such.