IS F (2008-2014) Discussion topics related to the IS F model

Is Ethanol-Free Gas better?

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Old 06-15-11, 06:09 AM
  #31  
crazymikie
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That sucks. I guess you get the same crappy 91 octane that CA/NV get here in the states.

You could try mixing 1/2 tank 91 with 1/2 tank 94 to save some money. Running straight 94 is probably overkill.


Mike


Originally Posted by IceIridium
Okay I filled up with 91 octane with "up to 10% ethanol" at Chevron and have been driving with it for several days now. Here's my impression so far.

I can't wait to get rid of this **** and get back in my 94!!!

Regular mode feels fine. But Sport mode feels like 1/2 Sport mode now. It certainly lacks that extra "kick" it had before even at slight throttle. Before, if I was in heavy traffic I had to make sure Sport mode was off because if I wasn't careful I'd suddenly lunge towards the car in front of me but now I can have Sport mode on all the freakin' time.

No idea if it's the ethanol doing it or the octane rating, but it sucks.

Now I just hope that after I burn off this crap and fill up 94 the computer will correct itself back and it will be fun again....
Old 06-15-11, 06:33 AM
  #32  
IS350atWOT
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I can't wait to get rid of this **** and get back in my 94!!!
Yeah, mine runs better on 93 than 91. I really wanted it to work on 91, but just had better gas mileage on 93 and less throttle hesitation.
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