MicroTuner: Octane in Europe
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Joined: Jul 1999
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From: The Netherlands
MicroTuner: Octane in Europe
Mike,
First of all, thanks for replying to my email.
Second, I have contacted Shell Netherlands about the octane numbers in Europe.
Fuel available at our pumps are 95 Unleaded and 98 Unleaded.
But those numbers mean totally something else as the numbers in the US as you explained.
Fuel in the US uses the so called AKI number.
AKI is short for Anti Knock Index.
Like you said, the AKI number is calculated by this formula.
(RON+MON) /2
Fuel has 2 different values, the RON and the MON value.
95 and 98 Fuel we see at the pumps here are the RON numbers.
95 Unleaded: RON=95 MON=85
AKI= (95+85)/2=90
That means that 95 Unleaded sold here is the same as 90 Fuel in the US.
98 Unleaded: RON=98 MON=88
AKI= (98+88)/2=93
That means that 98 Unleaded sold here is the same as 93 Fuel in the US.
Man!! was I disappointed when I heard this.
I really didn't know this.
I always thought that 95 here was the same as 93 in the US.
That means I have to fill up with 98 Unleaded. ($$$$$$)
Today's gasprices:
95 Unleaded (90 in US):$4.825/US Gallon
98 Unleaded (93 in US):$5.048/US Gallon
CJ
First of all, thanks for replying to my email.
Second, I have contacted Shell Netherlands about the octane numbers in Europe.
Fuel available at our pumps are 95 Unleaded and 98 Unleaded.
But those numbers mean totally something else as the numbers in the US as you explained.
Fuel in the US uses the so called AKI number.
AKI is short for Anti Knock Index.
Like you said, the AKI number is calculated by this formula.
(RON+MON) /2
Fuel has 2 different values, the RON and the MON value.
95 and 98 Fuel we see at the pumps here are the RON numbers.
95 Unleaded: RON=95 MON=85
AKI= (95+85)/2=90
That means that 95 Unleaded sold here is the same as 90 Fuel in the US.
98 Unleaded: RON=98 MON=88
AKI= (98+88)/2=93
That means that 98 Unleaded sold here is the same as 93 Fuel in the US.
Man!! was I disappointed when I heard this.
I really didn't know this.
I always thought that 95 here was the same as 93 in the US.
That means I have to fill up with 98 Unleaded. ($$$$$$)
Today's gasprices:
95 Unleaded (90 in US):$4.825/US Gallon
98 Unleaded (93 in US):$5.048/US Gallon
CJ
Former Sponsor
Joined: Mar 1998
Posts: 13,385
Likes: 4
From: Virginia
Hi F150Europe,
You're very welcome!
This is true basically all across Europe, so I didn't think it would be any different where you are. So just like here in the US, you simply use your highest octane unleaded pump gasoline with the Superchips tuning. So you simply do the same as all of us using the Superchips tuning do here.
We can also do a custom programmed Superchip module (not the Micro Tuner) to tune it for a lower octane, but of course this will reduce the power gain as well, so we generally don't recommend that.
I lived in Europe for many years (saw the Wall being built), so I grew up with $2-$3 a gallon gas prices when here in the US people paid 25 cents a gallon. And due to that you don't see a lot of large vehicles with V8 engines over there in Europe, those high gas prices are due to the enormous taxes that European countries (and other countries) put on their gasolines, and in some countries the vehicles themselves are taxed based on power.
Thanks for posting your findings,
You're very welcome!
This is true basically all across Europe, so I didn't think it would be any different where you are. So just like here in the US, you simply use your highest octane unleaded pump gasoline with the Superchips tuning. So you simply do the same as all of us using the Superchips tuning do here.
We can also do a custom programmed Superchip module (not the Micro Tuner) to tune it for a lower octane, but of course this will reduce the power gain as well, so we generally don't recommend that.
I lived in Europe for many years (saw the Wall being built), so I grew up with $2-$3 a gallon gas prices when here in the US people paid 25 cents a gallon. And due to that you don't see a lot of large vehicles with V8 engines over there in Europe, those high gas prices are due to the enormous taxes that European countries (and other countries) put on their gasolines, and in some countries the vehicles themselves are taxed based on power.
Thanks for posting your findings,
