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What octane do you put in your 8?

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Old 09-14-2007, 02:09 PM
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So yeah, anyways, back to mileage.

Im interested to see what people are getting on different octanes.
Old 09-14-2007, 02:12 PM
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87 octane i get like 200 miles to the tank, with 89 I get about 200 also, with 91 I get about 220-230, city driving, if its highway, I get 300 with 91, never used the others because I love my car, and she only drinks expensive stuff
Old 09-14-2007, 02:42 PM
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Just can't help ya there, I always run 93.
Of course if I'm in a rental car, then I immediately drop to 87.
Old 09-14-2007, 06:05 PM
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these threads are always a hit. http://en.wikipedia.org/wiki/Octane_rating . if you want to believe otherwise, do so. arguing about octane rating on this site is like arguing about which came first, the chicken or the...



im still right by the way.
Old 09-14-2007, 06:17 PM
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Originally Posted by mikeferz42
im still right by the way.
Nah. But you are good at badly paraphrasing other people's work.
The Wiki entry you cite is missing most of the details involved (they don't even mention sensitivity), but it is probably adequate for "arguing" about it from your perspective.

You would be better served reading Bruce Hamilton's tome on the subject.
Old 09-14-2007, 06:53 PM
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MazdaManiac, i just gotta say i love your profile pictures, hehehe
Old 09-14-2007, 07:06 PM
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Nearly everybody does.
Old 09-14-2007, 07:50 PM
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Originally Posted by MazdaManiac
Nearly everybody does.
Casey Kelso/That 70's Show quote
Old 09-14-2007, 08:12 PM
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Originally Posted by MazdaManiac
Nearly everybody does.
I don't anymore, your avatar got me in trouble in my UNIV 100 class

sucks *** man, everyone was looking at my laptop @.@
Old 09-14-2007, 08:30 PM
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Originally Posted by tajabaho1
I don't anymore, your avatar got me in trouble in my UNIV 100 class

sucks *** man, everyone was looking at my laptop @.@
UNIV 100? sounds like a blow off "how to plan to do your homework and organize your notes" type of class anyway.
Old 09-14-2007, 10:02 PM
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91 octane. ....just cause i feel cool when i press hte button and im on a date lol.
Old 09-14-2007, 10:56 PM
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... so if theres no major effect, why the different types?

sorry, i'm knew to this stuff.
Old 09-14-2007, 11:01 PM
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because some cars need the higher octane.

my car has a turbo. it compresses air in the engine to generate more power. The higher compression requires a higher octane level. If I used 87, the fuel can spontaneously ignite before it's supposed to, causing severe engine damage.

This is an extreme example. For most cars, they're programmed to expect a specific fuel grade, and the car's computer has been setup to be optimized for it. Using too high of an octane is a waste of your money. Using too low, and your car might experience pinging.

Due to elevation differences, climate, fuel grades, etc. You will not know what works best for you until you try it. This is also why Mazda recommends premium fuel - because it will work for everyone, regardless of their location. That doesn't mean it's the best fuel for you to use though.

If your car is NA, it would be difficult to cause real damage by trying a lower octane level.
Old 09-15-2007, 02:18 AM
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Im a cheap ***. The lowest of the low 87 all the way baby!!!! haha
Old 09-15-2007, 02:43 AM
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91 is the highest out here in san diego unless you drive by elcajon speedway where i think they have 109(i think it might even be VP fuel) at the pump :D... but i use 91
Old 09-15-2007, 04:21 AM
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wow I didnt even kniow 109 existed..damn small town I think the highest we have is 93 or w/e dunno cuz Im 87 all day everyday
Old 09-16-2007, 12:44 AM
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i put 91 in mine and i have no idea what kind of gas mileage i get but i know it's not very high.
Old 09-16-2007, 09:00 PM
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oh yeah! they have 116 octane as well all the way up to c17..crazy *** stuff..

:AA:

Originally Posted by Gauge
wow I didnt even kniow 109 existed..damn small town I think the highest we have is 93 or w/e dunno cuz Im 87 all day everyday
Old 09-16-2007, 09:09 PM
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I just put in 87 and I'm still getting the same mileage if I were using 91. about 60-70 miles per 1/4 tank.
Old 09-17-2007, 12:12 AM
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Originally Posted by Spinbreakz
MazdaManiac, i just gotta say i love your profile pictures, hehehe
I wonder if they use 87 or 91.
Old 09-17-2007, 12:15 AM
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They use 88
Old 09-17-2007, 12:24 AM
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Originally Posted by Friendlydacat
I wonder if they use 87 or 91.
they use 69
Old 09-17-2007, 12:26 AM
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No.. I would use 69 after they ran out of 88
Old 09-17-2007, 12:33 AM
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Originally Posted by 8rotor8
No.. I would use 69 after they ran out of 88
You don't want to get premature detonation with 69.
Old 09-17-2007, 07:28 AM
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Question

Originally Posted by mysql101
because some cars need the higher octane.

my car has a turbo. it compresses air in the engine to generate more power. The higher compression requires a higher octane level. If I used 87, the fuel can spontaneously ignite before it's supposed to, causing severe engine damage.

This is an extreme example. For most cars, they're programmed to expect a specific fuel grade, and the car's computer has been setup to be optimized for it. Using too high of an octane is a waste of your money. Using too low, and your car might experience pinging.

Due to elevation differences, climate, fuel grades, etc. You will not know what works best for you until you try it. This is also why Mazda recommends premium fuel - because it will work for everyone, regardless of their location. That doesn't mean it's the best fuel for you to use though.

If your car is NA, it would be difficult to cause real damage by trying a lower octane level.
What if your car is NA and your useing 100 Octane?
Any harm?


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