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Old 01-09-2015, 12:30 AM   #1
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What Gasoline Octane

Does anyone know what Octane Ford recommends?
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Old 01-09-2015, 12:40 AM   #2
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Not enough information. Not all Ford products use the same octane fuel.
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Old 01-09-2015, 01:00 AM   #3
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My motorhome has a ford chassis V10 motor they recommend 87 octane. My Chevy Volt requires Premium, go figure.
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Old 01-09-2015, 06:25 AM   #4
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Here's an answer to a related question that no one asked.


As Batts-toy stated, the Ford V-10 is designed for 87 octane. If you buy gas at higher altitudes, such as in Colorado, you'll see the pumps are posted 85 or 86 octane for unleaded regular. That's still okay because at higher altitudes the air is thinner and un-turbocharged engines run with lower combustion pressures, so they don't need quite as high octane gasoline. Modern engines have knock sensors so if you should fill up with 85 octane and still have some in your tank when you reach a lower altitude (not likely at the rate mine uses gas), you would loose a slight amount of power but you won't hurt the engine.
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Old 01-09-2015, 06:32 AM   #5
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I would think that answer is in your owners manual!
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Old 01-10-2015, 11:24 AM   #6
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Ive put Sunoco GTX260 (98 octane) in mine once or twice.
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Old 01-11-2015, 07:43 AM   #7
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Originally Posted by cucamelsmd15 View Post
Ive put Sunoco GTX260 (98 octane) in mine once or twice.
Higher than required octane won't hurt anything, but it doesn't make any difference in mileage or power, either. Some brands claim they have more fuel system cleaner in their premium grades.
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Old 01-11-2015, 08:36 AM   #8
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Does anyone know what Octane Ford recommends?
I assume you are talking trucks. I'm not aware of any Ford truck that requires more than 87 octane. On the Ecoboost, 91 is recommended but not required for towing. In normally aspirated Ford trucks, you would likely be wasting your money by using premium. They are designed for 87.

This is not to say that there isn't some small gain from premium in vehicles that detect spark knock and make timing adjustments on the fly. But the gains are small and generally cannot be felt in the seat of the pants. And again, not required that I am aware of.
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Old 01-11-2015, 03:27 PM   #9
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Higher than required octane won't hurt anything, but it doesn't make any difference in mileage or power, either. Some brands claim they have more fuel system cleaner in their premium grades.
Sure, I realize that. I generally run 87 in mine and dump whatever GTX260 is left after the race weekend in on top of it. It wont keep, so it might as well get used.

My response was, uh, more tongue in cheek.
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Old 01-11-2015, 09:36 PM   #10
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Mine calls for 87 octane but I run the 89 since I mostly use it for towing. I know there is prob not much gain, if any, by doing so, but it is not my daily driver either so the price difference isn't going to be that much to pay.
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