I've realized my e30 uses as much prem as a Z06 Vette

[Holland]

Anyone who says that their car ran better with 87 octane than it did with 91 or 93 or whatever is falling victim to the placebo effect.

Higher octane also burns a bit quicker. IIRC running higher octane in a car rated for lower octane produces pre detonation.

[Jesse30]

ahhh :) one thing i dont miss about my e30.


im gettin 38mpg highway

[Stephen]

ahhh :) one thing i dont miss about my e30.


im gettin 38mpg highway

oh yea well my car is boxy

[bimmer_E30]

wat jesse sold his e30 again? what u drive now lol?

[tjts1]

Higher octane also burns a bit quicker. IIRC running higher octane in a car rated for lower octane produces pre detonation.

You have it backwards.

[Jesse30]

wat jesse sold his e30 again? what u drive now lol?

a hummer

[McGyver]

No, no knock sensor on an M20, so no "knock retard"

...for some reason i feel like i just got called a retard. :???:

[bimmer_E30]

a hummer

with a m10 swap

[BMWerke]

my '90 325is gets 16.5, its an autocraptic

[caliGreen]

full tank gets me about 235miles on 87
and 91 gives me about 260 on 91
drive the same.. but i know ther is lots of variables
al stock

or maybe its me

[blefevre]

I get gas when I need it, fuck mileage. Dollar for dollar you are not going to find a more fun and exciting car.

I agree.

I manage 25mpg with a chipped M20 with a 4.10 driving mix city/highway. I think that's pretty darn good for a 20 year old car, I don't drive light either.

[StereoInstaller1]

Higher octane also burns a bit quicker. IIRC running higher octane in a car rated for lower octane produces pre detonation.

No, exactly opposite. Higher octane burns lower temp and slower, that is how it reduces detonation and pinging.

[Fusion]

23mpg usual driving @ N95
27.5mpg best @ N95
19.5mpg track day, highway, city @ 5.3gal of N100

[blackICEbomb]

it even states right in the owners manual to use nothing less than 91

[Adrian_Visser]

it even states right in the owners manual to use nothing less than 91

So much mis-information in this thread.

Do you even know the difference between RON and MON octane rating?

Or for that matter anything about octane ratings at all?

Obviously you do not.


In Europe the RON octane rating system is used in North America the RON+MON/2 system is used this is also called the AKI rating. Basically it means that in north American the octane rating on the pump is four or five points lower than in Europe and many other countries using only the RON rating.