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85 Octane

nastang87xx

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Rebellion said:
The 5.0 should be less sensitive to low octane being NA and all, I would still advise against putting anything under 87. If you ever have to put 85 in an emergency and there is no other choice, just fill enough to get to the next town and top it with 93.
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Except that Gen 3 NA motor is a burly 12:1 compression ratio...
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69mach1-395

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youra6 said:
Except Colorado doesn't really have 93. 85 octane has been controversial here and it's just a way for petrol companies to cut costs by having 87 mid tier instead of bottom tier.
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Not sure you know what top tier fuel is ^
There is no mid tier...
 
EFI

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At this point, why don't you just piss in your fuel tank...probably will get as much benefit as 85 octane.
 

white15gt

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Oh dear god... You have a high compression, $30,000+ car... stop being cheap and put the right fuel in it.
 

Rebellion

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nastang87xx said:
Except that Gen 3 NA motor is a burly 12:1 compression ratio...
Click to expand...
Then that's too bad :paddle::paddle::paddle:

I believe even the gen3 is still 87 minimum, compression offset by direct injection should yield a lower octane minimum than compression with port injection.

But then again, it's dual injected...I honestly don't know how it deals with it in the gen3.
 

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Ebm

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The only 85 that belongs in a Stang is e85.
 
nastang87xx

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Rebellion said:
Then that's too bad :paddle::paddle::paddle:

I believe even the gen3 is still 87 minimum, compression offset by direct injection should yield a lower octane minimum than compression with port injection.

But then again, it's dual injected...I honestly don't know how it deals with it in the gen3.
Click to expand...
87 is indeed the minimum but it does put the knock sensors into overdrive. The new 'Yote has two more knock sensors as well to deal with this. While the contingency is there, it doesn't mean you should. This is a high strung engine. Durable, but high strung. The fact that the OP isn't using premium for the added benefits of premium makes me irate enough but hey, it's not my money or my car.

Oh by the way folks, pulled right from the goddamn 2018 Mustang GT owner's manual.

fuel.JPG


:paddle:
 
Zelek

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nastang87xx said:
87 is indeed the minimum but it does put the knock sensors into overdrive. The new 'Yote has two more knock sensors as well to deal with this. While the contingency is there, it doesn't mean you should. This is a high strung engine. Durable, but high strung. The fact that the OP isn't using premium for the added benefits of premium makes me irate enough but hey, it's not my money or my car.

Oh by the way folks, pulled right from the goddamn 2018 Mustang GT owner's manual.

fuel.JPG


:paddle:
Click to expand...
Reading is about to become a college degree soon. So many people can't do it anymore.
 
69mach1-395

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It's not that they can't read...just won't. It's actually presidential, didn't you know?
 

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airfuel

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Young people (and most people really) need to spend a little time learning the basics.

Google:
Top tier gas.
Octane ratings. (Not related to top tier)
Altitude effects on octane.
Detergents in gasoline.
And any other topic you are not sure of before posting.
 
Timeless

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Follow the manual or don't cry when warranty work is denied.

And what happens if you use 85 octane and travel to a lower altitude?
 
Nameless

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Timeless said:
Follow the manual or don't cry when warranty work is denied.

And what happens if you use 85 octane and travel to a lower altitude?
Click to expand...
If you don't refill it with 91/93 octane, it goes KABOOOM!
 
HISSMAN

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People say rtfm but people are also lacking common sense. 85 should be okay, but for peace of mind use 87 or above. Simple as that.
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