re: Mid-Range 89 Octane Fuel - Who buys it?

All else equal, it will be the same mileage. However, with the extra 50hp from that premium fuel, you will go super fast resulting in higher MPG and ultimately time savings to cover the expense.

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landrover

Made a mistake years ago trying to go cheap with gas and it cost me dearly

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I doubt the gas you were using was the reason. Those are known as being POS vehicles.

I use mid grade in all my vehicles and there's a noticeable difference in performance for the better.

My BMW recommends 91 octane. Never seen 91 octane. Use 93

you do realize 89 is just a blend of 93 and 87, right?

there isn't like a special tank in the ground that the fuel truck empties into....when you buy 89 it just blends 93 and 87 at the dispenser

and yes fuel is fuel....all you prima donna's that only buy She'll or Exxon....bad news, it's all the same sheeeeeet. Sorry

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My BMW recommends 91 octane. Never seen 91 octane. Use 93

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Was driving to the Smokys once and found a gas station that had five or six options. Only time I've ever seen that.

I've always just used whatever octane is recommended for the car and some of them have been 89.

I only run ethanol free in those machines.

You need to discuss what an octane rating is to have a decent conversation.

It's not like it's some empirical number. It's an "anti-knock" rating. And refineries have to certify those ratings daily. (And they use what they call knock engines to do this.)

Unless you don't care about your money, you should use the lowest octane rating that your vehicle will run on without knocking. Therefore, there are many vehicles that will not knock on 89, but will on 87.

Gasoline "recipes" often vary from month to month, and certainly from refinery to refinery. Your vehicle may run better on one, better than another. Recipes are changed to maximize net profit, and to meet regs. (Many markets have different regs for seasons.)

All that said, smart folks buy the cheapest that their vehicle can stand. If you can't hear it knocking when you get on the gas hard (and you have the radio turned down), try the next lowest octane rated fuel.

If you were my employee, you would be fired as soon as I got the bill. Shows complete lack of GAF for the company that provides you with a way to make a living.