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Technical What kind of fuel?

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Technical What kind of fuel?

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pusko

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Hello all.

As the prices of the following fuels (octane 95, 98, 100) in my country are almost the same, I was wondering if I should put the one with 100 octane in my 1.4?

Will this make any difference? Or are these engines "made" for normal 95 octane fuel and "100" will hurt them? :confused:

regards, blaz
 
high octane fuel only makes a differance on turbo and modified cars
and will not damage you engine .wish it was the same over here high octane fuel is dearer and my scooby loves it :eek: as for the 500 it sips derv :D
 
So i guess it's better to put "100" in.

the difference in price (95-100) is between 0.02€ and 0.04€ per liter.

I know that performance gains are equal to none with "100", but
I heard that cars do better MPGs with higher octane fuel.

Could be "100" better, healthier for an engine on long term?
 
Last edited:
The Engine Control Unit (ECU) on the 500, like most recent units, is "adaptive". It monitors the engine continuously for mixture strength, exhaust emissions, ignition advance, and can detect the onset of pre-ignition in individual cylinders. It therefore follows that it is able to adapt to variations in fuel octane rating, and can use a different ignition advance mapping for high and low octane fuels. You should, as a result, gain some performance advantage by using 100 octane fuel rather than 95, once the ECU has "re-learned" the settings in terms of detonation and ignition timing. The "learning" process takes about 15 to 20 mins of driving under mixed conditions.

John
 
John R Smith said:
The Engine Control Unit (ECU) on the 500, like most recent units, is "adaptive". It monitors the engine continuously for mixture strength, exhaust emissions, ignition advance, and can detect the onset of pre-ignition in individual cylinders. It therefore follows that it is able to adapt to variations in fuel octane rating, and can use a different ignition advance mapping for high and low octane fuels. You should, as a result, gain some performance advantage by using 100 octane fuel rather than 95, once the ECU has "re-learned" the settings in terms of detonation and ignition timing. The "learning" process takes about 15 to 20 mins of driving under mixed conditions.

John
Click to expand...

Thanks for this useful info. (y)
I'll be only using 100!
 
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