What grade of gas do you put in your SI?

[17siturb0]

Premium only in fact i drive a couple miles out of the way to get 93 over 91. Luckily for me i know the guy who took my car to do the first fill up at the dealer so i got premium fuel from the start.

I do the same. I get the best I can get.

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[ice raptor]

If i knew where 93 was id get it but everywhere here is 91

 

[TheRealWizzy]

If i knew where 93 was id get it but everywhere here is 91

Only one gas station in the town has it lol.

 

[ice raptor]

Only one gas station in the town has it lol.

In madison? I think the only one i've seen is on the east side off buckeye maybe?

 

[mis3]

That first free tank of gas was regular for me... Sales lady said "Yes, it takes Regular gas". Premium ever since.

I have learned over the years that the salespersons usually would say anything to make a sales. She may not be lying, maybe she just did not know better.

My understanding all modern engines would self-adjust to process all grades. I would put in whatever Honda recommends for a given model. No one knows more about Honda engines than Honda engineers!

 

[nuowner]

I'll disagree with the group. Honda may 'recommend' premium, but it'll run just fine on regular. If it said 'premium unleaded required', that's a different matter to me.

I asked the question of what the free tank was, and yeah, it was regular like I expected it to be. That's what I'm using. I think Ford recommended premium in my '12 GT, but I ran it a long time with regular. Did go to premium eventually, but only for the few MPG increase.

 

[tacthecat]

Rumors are great fun - facts are better. Read the owner's manual, even the Type R can run on 87! It and anything else "may" run better on higher octane but unless it's "Required" or you're a person who must have every single horsepower/lb-ft, it's not "Required".

 

[ice raptor]

Rumors are great fun - facts are better. Read the owner's manual, even the Type R can run on 87! It and anything else "may" run better on higher octane but unless it's "Required" or you're a person who must have every single horsepower/lb-ft, it's not "Required".

Well i mean...You got the SI for a reason. If you wanted to not have that extra horse wouldnt you just get a regular civic or hatch and call her good there?

 

[mis3]

IMO. Put in whatever gas you want. If you cannot feel the performance difference, stick with regular.

One thing we all agree is the mileage would suffer. Maybe someone can calculate quantitatively the fuel saving vs the extra cost.

 

[17siturb0]

I use premium because of the shear fact that the car pulls timing if you use regular. Runs better with premium.

 

[ice raptor]

I plan to as soon as my tank is almost empty.

 

[Forced Induction]

I think (or thought) cars with "sport" button required 91 according to manual. To me the bigger issue is using top tier gasoline (which I think is also stated in manual). It contains more detergents which are essential for direct injection.

 

[Old guy]

One thing we all agree is the mileage would suffer. Maybe someone can calculate quantitatively the fuel saving vs the extra cost.

In my Si I have run two tanks of 88 OCT E15 and two tanks of 91 OCT E10. Here in central Iowa the premium is $.60 a gallon more than the E15. My MPG has been one mile per gallon more on premium. That is both as a daily driver and on the interstate. So for a full tank of gas, I would be paying $6.00 to $7.00 more per tank, depending on how low I let it get, to gain 10 or 11 miles more on a tank of gas. IMO, not worth it at all.

 

[riv21]

Well hell I am in trouble then lol. As per manual I had my car filled up with regular after I read that adding premium to the car was a waste of money and the mileage difference was neglible.

 

[mis3]

In my Si I have run two tanks of 88 OCT E15 and two tanks of 91 OCT E10. Here in central Iowa the premium is $.60 a gallon more than the E15. My MPG has been one mile per gallon more on premium. That is both as a daily driver and on the interstate. So for a full tank of gas, I would be paying $6.00 to $7.00 more per tank, depending on how low I let it get, to gain 10 or 11 miles more on a tank of gas. IMO, not worth it at all.

Good to know. How about the fun factor? Did you feel any performance difference?

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