Regular or Premium

[tmbarnes77]

Premium!!!

 

[Mangina]

Regular. It makes no sense throwing money away AND getting worse mileage.

 

[ezeq]

Regular


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[FordandPolaris]

For some reason, 87 octane winter gasoline runs awful in my truck. I am lucky if I see 6-7 mpg's. It is probably due to my O2 sensors not reading correctly but not really sure. I switch to 89 in the winter and go right back to my normal of around 11-13 mpg's. Summer 87 gets me those same numbers. I even got 14mpg's the last tank! Haha.

 

[DRS1]

With Ethanol at 10-15 percent, you knock off up to 5 percent off the top for HP and mileage due to the lower BTU rating per gallon. Finding non ethanol gas will pick up power and mileage with one fell swoop. And engines run smoother. Just the way it is.

 

[The eXpedition]

I use Octane 95, by God if that will hurt my car please let me know guys

 

[DF5.4]

I use Octane 95, by God if that will hurt my car please let me know guys

If you're not tuned for it, you're only hurting your wallet.

 

[The eXpedition]

If you're not tuned for it, you're only hurting your wallet.

Thanks a lot man

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[montecarlo31]

If you're not tuned for it, you're only hurting your wallet.

proof that you won't get some power gains running higher octane?

 

[FordandPolaris]

proof that you won't get some power gains running higher octane?

Google would have all of the proof you need. Higher octane is designed to allow for higher compression motors to run without early detonation. If you increase octane without increasing compression, no more power is made. Stick with 87.


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