• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


What octane is everyone using?

What octane is everyone using?

  • 87 Octane

    Votes: 31 6.0%
  • 89 Octane

    Votes: 7 1.4%
  • 91 Octane

    Votes: 176 34.3%
  • +93 Octane

    Votes: 299 58.3%

  • Total voters
    513

rooSTer

1000 Post Club
Messages
1,785
Likes
129
Location
Miami
#1
Since our cars have premium as a recommendation I was curious what octane everyone is using.
 


Messages
174
Likes
12
Location
Qu?bec
#4
91 is the max I can get where I am.

mYsTiCfAc3, If I am not mistaken, Montreal is the only place in the province where you can get 94 right? I'd love to try it once and see the difference.
 


Messages
286
Likes
23
Location
Yukon, OK
#5
I stick with the 93. I wouldn't think constantly switching octane ratings can very good for for her. Besides. 87 vs 93 octane is what, maybe $3 more per fill up?
 


Messages
182
Likes
6
Location
Montreal - Boucherville
#6
91 is the max I can get where I am.

mYsTiCfAc3, If I am not mistaken, Montreal is the only place in the province where you can get 94 right? I'd love to try it once and see the difference.
Well i dobt think so... I went ottawa a few weeks back and there where some and usually when i drive to alma im able to fill up with 94 but im not totally sure
 


Messages
335
Likes
3
Location
Toronto
#7
I use 91 because that's what my local gas station has. I could get some 94 but that's too high since someone mentioned 93 is what it is tuned for. Also I don't want to waste time blending my own 91 with 94 to create 93 so 91 it is and I may treat her to 94 once a month. It baffles me how Ford tunes the car for 93 but you can't find it anywhere in Canada. LOL
 


MKVIIST

5000 Post Club
Staff Member
Premium Account
Messages
5,767
Likes
1,029
#8
93 or at a minimum Premium for me.
 


STooge

Active member
Messages
534
Likes
34
Location
Salt Lake City
#13
91 here. That is the highest i can get easily and daily. To my knowledge there are no Gas stations that sell higher.
 


R4D4R

New Member
Messages
1
Likes
0
Location
Lavonia
#16
I use 91 because that's what my local gas station has. I could get some 94 but that's too high since someone mentioned 93 is what it is tuned for. Also I don't want to waste time blending my own 91 with 94 to create 93 so 91 it is and I may treat her to 94 once a month. It baffles me how Ford tunes the car for 93 but you can't find it anywhere in Canada. LOL
The cars are designed to run on everything from 87 and up as long as it's unleaded (98+ octane fuel occasionally is leaded).

Octane's job is essentially to not let the fuel/air mixture explode until the spark plug ignites it (as opposed to pre-ignition due to compression). A higher octane rating, providing it doesn't have lead in it, will not harm the engine.

See: http://en.wikipedia.org/wiki/Octane_rating
 


Messages
20
Likes
3
Location
Dallas
#17
93 always for me... its still cheaper than filling up my wrx. Ive been buying only premium for 3 or so years now.

Sent from my SAMSUNG-SGH-I317 using Tapatalk
 


Perry

Active member
Messages
611
Likes
51
Location
Leawood
#18
I'll put in 93/94 if/when able, but 91 will be the usual fill due simply to availability.

On a side note, any of you guys ever use octane-boosting additives, such as STP, AMSOIL, etc.?
 


TheStig

Senior Member
Messages
860
Likes
117
Location
Phoenix
#19
87 currently. Ford says it takes 87, im not gonna spend extra cash on 91 when it doesn't have enough knock to warrant the extra octane.

To my knowledge nearly no stations in AZ have 93 octane anyways. Once I get my AP ill run the 91 map.
 


Similar threads



Top