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Topic Review (Newest First)
Today 07:16 PM
04ZTSJelf
Quote:
Originally Posted by TooOld View Post
Would sure like to see dynamometer results of 87 vs. 89 vs. 91 vs. 93 octanes.
That, and e85.

I can't actually say that my car runs better on 93 because I haven't used anything else, except for the 'dealer tank' that it came with. I have thought about trying e85 though.
Today 07:05 PM
dchawk81 I get about 38 out of 87 octane in subfreezing temps mostly highway.

I get in the lower 40s when it's warmer.

I don't see a point in burning the higher priced stuff. The cars are smart enough to sort everything out.
Today 06:53 PM
TooOld Would sure like to see dynamometer results of 87 vs. 89 vs. 91 vs. 93 octanes.
Today 06:26 PM
2015silverHatchSE ^^ Good call! LOL
Today 06:20 PM
Arco-Zakus
Quote:
Originally Posted by 2015silverHatchSE View Post
... I just wonder why the 2012 manual is the only one that states "Premium fuel will provide improved performance." ...
It's not. See Post #1726 in this thread.
Today 05:00 PM
trekbiker we've benn using premium for years seems to run smoother :0)
Today 04:59 PM
2015silverHatchSE True that dyn085! Wonder if the Skyactiv motors perform better as well on premium since they are high compression too? I shall do a little research. Def will say that with this high test dose (and AEM dry drop in filter, which I've had for a bit) that the twisty, hilly roads around my neck of the woods made the car feel so much better making it around them!
Today 04:43 PM
dyn085
Quote:
Originally Posted by 2015silverHatchSE View Post
Thanks for the explanation dyn085! It's good to learn how things work, IMO. I just wonder why the 2012 manual is the only one that states "Premium fuel will provide improved performance." Wonder if anything on the 2.0 changed since then? It still has a 12:1 compression ratio. Kinda wondered myself with that high compression, why they wouldn't recommend premium? My assumption is that potential buyers would balk at it because no other small cars require it...
I think the statement was removed to avoid confusion, but there is no confirmation from anyone, anywhere about it. As for why they don't recommend premium, you pretty much nailed it-Americans don't want to be forced to use premium in a compact 'everyday' car. Besides, why force people to use it when you can offer them the lower-cost option to use 87 as well, thanks to modern tuning?
Today 04:28 PM
2015silverHatchSE Thanks for the explanation dyn085! It's good to learn how things work, IMO. I just wonder why the 2012 manual is the only one that states "Premium fuel will provide improved performance." Wonder if anything on the 2.0 changed since then? It still has a 12:1 compression ratio. Kinda wondered myself with that high compression, why they wouldn't recommend premium? My assumption is that potential buyers would balk at it because no other small cars require it...
Today 03:45 PM
ThoR294 Yeah after reading, it looks like more aggressive/traffic driving benefits more from premium. She does a lot of highway, but she does get stuck in traffic. So I'll fill her tank for her and not tell her what grade it is so she can't try to sabotage the test :)
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