Hurricane Fuel Octane

[RAL]

I would be running 91 regardless, because I want the best performance. I'm not driving it for fuel mileage.

Understood. My only point was saying the hurricane achieves better fuel economy than the v8 is incomplete if you don’t account for the differential cost of the higher octane fuel. That’s really all.

 

[RHO]

I wanted to be the first of hundreds of these threads that are soon to come.....

The engine runs fine on 87 octane gas and you are tossing money in the burn pit to run premium......
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THE Standard motor yes 87 is fine but the HO Most likely the 89 octane ,

 

[LOWRMPG]

Understood. My only point was saying the hurricane achieves better fuel economy than the v8 is incomplete if you don’t account for the differential cost of the higher octane fuel. That’s really all.

What is the sense on that? Fuel economy, in the auto sense, is based on the miles per gallon, not cost per mile.

If I just wanted to consider the cost difference of 87 vs 91, I could have saved about $800 in a year if mine didn't require premium. But the smiles per mile would have been considerably less.

 

[RAL]

What is the sense on that? Fuel economy, in the auto sense, is based on the miles per gallon, not cost per mile.

If I just wanted to consider the cost difference of 87 vs 91, I could have saved about $800 in a year if mine didn't require premium. But the smiles per mile would have been considerably less.

I don’t want to argue but the point of miles per gallon is cost. Higher mpg cars are cheaper to run. However, if a marginal increment of improvement requires premium or a higher octane fuel, that additional cost must be put into the mix to get an honest comparison. The only exception to this analysis is the convenience of highway range - that is a nice perk of a higher MPG car relative to a lower MPG car with the same size fuel tank.

I am not sure why this would be a controversial statement in the sense that manufacturers try to sell the benefit of higher mpg cars but if that benefit requires fuel that costs me almost substantially more (typically close to a dollar a gallon) it is less of a benefit than advertised.

 

[LOWRMPG]

I don’t want to argue but the point of miles per gallon is cost. Higher mpg cars are cheaper to run. However, if a marginal increment of improvement requires premium or a higher octane fuel, that additional cost must be put into the mix to get an honest comparison. The only exception to this analysis is the convenience of highway range - that is a nice perk of a higher MPG car relative to a lower MPG car with the same size fuel tank.

I am not sure why this would be a controversial statement in the sense that manufacturers try to sell the benefit of higher mpg cars but if that benefit requires fuel that costs me almost substantially more (typically close to a dollar a gallon) it is less of a benefit than advertised.

I think the point not coming up here is if you're viewing it as cost per mile, then you should only evaluate it against other motors using the exact same propellant. If your comment is about higher mpgs, then stick to the same octane levels. But saying one engine runs a different fuel so somehow it has some benefit or loss, that isn't apples to apples. Compare milage against engines that only run 91+ octane, or comparisons of engines only running 87 octane. Not an argument, cost per miles is its own figure and isn't generally tied to MPGs when comparing cars.

Your quote shows you're blending the two concepts which is what causes the questions: "There is a substantial difference in price near me between 87 and 91, often approaching a dollar a gallon, and so that essentially undoes any fuel economy achieved by the turbo six on a cost per mile basis"

 

[HSKR R/T]

Understood. My only point was saying the hurricane achieves better fuel economy than the v8 is incomplete if you don’t account for the differential cost of the higher octane fuel. That’s really all.

The cost of fuel has zero effect on the vehicles fuel mileage/economy.

 

[RAL]

People care about MPG because it is a measure of operating cost for a vehicle/. I am not blending concepts but this is also past the point of useful discussion. I actually like the hurricane - had the HO version in a rental GC L for a trip for two weeks - so I think people are taking it as a critique of the motor when the only point I am making is that all these higher MPG requirements often wind up with greater cost to the customer in terms of fuel
Or mechanical complexity with the resultant reliability risks. That’s all from me on this.