i was reading the owners manuel the other day and i am not sure if this is only '08 but it says to put 91/93 but its able to take 87. i put 89 in and i am getting high 20s for mpg. any input?

 

you probably dont want to go WOT....the lower octane wont improve/deprove mileage in any way, but if you try and run your engine hard (aka WOT or on a really hot day) then your going to get some knock.

 

supercharged?? if not your fine, though 20mpg seems low. I get 24 on 91 octane

 

He said high twenties which sounds about right. (mixed driving of course)

 

i haven't had any problems and i have done some hard driving and got up to 125mph so far.

that is why this is in the 2.4 tech section.





but what is everyone else running in there cars?

 

I run 89 in the summer and I just switched to 87 for the winter since I won't drive it hard/over 4k

next year I might have to run 91 in it since I plan of having it tuned

 

i run 89 cause i cant afford anything else

 

I have been running 94 in mine all summer long since it was bought new. It is stored through the winter.

 

ive ran 91 in mine all the time never have switched, i do abuse my car in high rpms (daily shifting between 3-4) agressivly take her close to readline, i notice my gas mileage sucks but im sure it has to do with the sri intake i have.

 

i put 91 on mine and that last me about a week and a half i do my gear shifts at 3k-4k rpms and i thought intakes make for better gas mileage? ^^^^^^^^

 

sorry..for some reason i thought u had a s/c. you're fine running lower octane...the ecu will pull timing accordingly. just know you wont be making as much horsepower, but you're still getting the same fuel economy

 

yeah i believe the manuel says something about that saying you can put 87 but you get worst hp and mpg. so that is why i am going middle ground.

 

our cars need all the hp they can make! 91+ for me

 

i run 91/93 at all times in the SC. overuse of anything less could result in the dreaded knock. during the summer i got btw 28-31mpg. i'll run 89 once in a blue moon so my wallet can take a breather.

 

i run 91 octane premium

 

I only use 93 Sunoco and get on average 32MPG according to the DIC. I did once put in 87 and could hear and feel the difference and my mileage dropped to 28MPG.

 

where in pitt are you from?

 

I run 93 and get about 24mpg.... but i drive alot of city & WOT

 

Only 93 is put in mine, avg about 24 mixed city and highway.

 

if you cant afford to run the correct fuel for your car.

you bought the wrong car.

 

agreed. if it's that big of a concern, or you can't affford it, get a prius.

i never complain about the price of gas, it is what it is and you have to buy it. otherwise take the bus. but seriously if gas goes up 20 cents a gallon, that works out to be like $45/year for me. big freakin deal. it's nothing to bitch about in my opinion. I hate when people are like "3.21 a gallon? wtf, yesterday it was 3.19 a gallon!"
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oooohhh, that extra 20 cents a week is really gong to break the bank!

 

yep for the difference in price at sunoco between 91 and 93 its ~ a 10cent difference sometimes less a gallon thats $1 a tank extra

 

i always get a kick out of people who say it too.

cuz invariably they all spend hundreds of dollars on mods too.
and yet cant afford to put the right fuel in.

 

X2, I just use 91 to use it but the way gas is getting here ($3.40/gal.) I might have to down grade......but not really recomended.

And why the low MPG? Always running your car?

 

can a 2.4 run a 93?....i thought it was 91 octance...i ran 93 once and it felt funny