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I'm about to pick up a used b6 A4; what is the minimum octane rating for 1.8T stock?

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Old 08-05-2005, 05:43 AM
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I'm about to pick up a used b6 A4; what is the minimum octane rating for 1.8T stock?
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Old 08-05-2005, 05:46 AM
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91
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Old 08-05-2005, 05:58 AM
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Thank you!
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Old 08-05-2005, 06:44 AM
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Default Partially wrong! 91 reccommended, 87 minimum
FYI
1) All cars can run 87 (by law)
2) If Audi reccomends 91, then that is what will get you rated power.(170 hp) If you were to run 87, you will get a lower hp (lets say 160 for example)
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Old 08-05-2005, 07:55 AM
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Default Re: Partially wrong! 91 reccommended, 87 minimum
The inside gas flap on mine states that a minimum 91 octane is required.

You can use 87, but it's a false savings.

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Old 08-05-2005, 08:06 AM
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Default Re: False savings...
What are you referring to? If its fuel economy, there is no difference.
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Old 08-05-2005, 08:49 AM
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Default That has not been my experience.
But I agree that 87 can be used, it's just not recommended.
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Old 08-05-2005, 09:31 AM
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Default I bet you get better MPG with the reccomnded 91....
its just inportant to know that if you need to put 87 in for whatever reason, rest assured that you will not break anything.

Manual does state that anything below 87 may cause engine damage.
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Old 08-05-2005, 09:37 AM
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Default you can run 87, but the car has to retard the timing and adjust for it.
I personally have never sunk below 91
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Old 08-05-2005, 10:00 PM
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you might get couple extra miles..but you pay more for it... so it balances out..
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