WHO USES THIS?
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You are currently reading a thread in /o/ - Auto
You are currently reading a thread in /o/ - Auto
WHY IS IT AN OPTION?
>>15216681
Higher compression engines.
>>15216702
Please be b8
>>15216681
I never understood this either.
I personally either use 87 or 93 depending on the car I'm driving, I see no purpose in having 89 and 91 octane.
>>15216767
>yfw you realize that pushing the 89 octane button just mixes 87 and 93 when you're pumping it
It's the ultimate scam
>>15216702
>>15216782
That's how you mix octanes, retard.
How do you think ethanol mixes work.
If I want 96, I'll mix C16 with 91 it's common practice. It diffuses evenly.
89 exists in case you don't need 91.. obviously.
>>15216868
that's what 87 is for
ATVs are designed to use 89.
My shitbox with 160k miles calls for 87 but had a tendency to ping in hot weather. Changed out the t-stat and started running 89 in the hottest months of the summer, and the pinging practically disappeared
>Live in yurop
>Can't get less than 95 octane fuel
>Google tells me 95 yurop octanes is 88 American octanes
>It's also 3-4x the cost
Europe w-wins again!
>>15216767
>no purpose in 91 octane
Who the fuck lives in a high enough elevation to need 93 octane? All the jokers in the south dropping cash for 93 at 1000 feet above sea level are burning money.
>>15218211
...people in denver?
>>15216681
Some cars are designed to run on 89 octane. For example the 2004 Toyota Avalon. 87 isn't enough and 91/93 is wasting money
>>15218211
>>15218402
Yall nignogs got it backwards. We go 85 87 91 here in the foothills, less Oct the higher you get. It's only the mud flats that get 93
>>15218211
??????????
>>15216681
Lol fucking fairy liquid.
At least in Europe we have REAL FUEL.
>>15218503
Already know it's bait but yeah just in case, different methods of measurement.
Your fuels aren't any different than ours.
>>15218511
baited
>>15216681
>WHY IS IT AN OPTION?
>>15216767
>I never understood this either.
There are engines that run without knocking on 87, but under load such as accelerating up a hill, there is some knocking that cannot be stopped (compensated for) by that car's computer. It is those engines running on the edge of acceptability of 87 that can use 89. They don't need 91.
I have such an engine. So 89 works for me.
>>15216868
>89 exists in case you don't need 91
Correct.
The people who say 89 is a scam because they don't understand, well, they are too quick to judge harshly.
>>15218146
We use different rating scales dum dum.
>>15218211
>Who the fuck lives in a high enough elevation to need 93 octane?
Nigger what? The higher you are the less octane you need.
>>15219091
Did you even read the entire post you fat fuck?
>>15219097
why is aviation gasoline 100 octane?
