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      05-25-2014, 07:37 AM   #1
Harveyten
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High octane fuel

How many of you are using high octane fuel, such as Shell V-power nitro and have you really noticed a difference
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      05-25-2014, 07:43 AM   #2
michel lane
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You should use tesco 99 and optimax 99 as standard in these cars . You should not use standard unleaded .
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      05-25-2014, 12:16 PM   #3
JOHNBMWM5
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Quote:
Originally Posted by Harveyten View Post
How many of you are using high octane fuel, such as Shell V-power nitro and have you really noticed a difference
I have tried them all over the 7.5K miles, my car runs best on Shell 95 i get best MPG just and the car likes it.
The Car hates "V Power" and runs rough on it.
Next best fuel is Esso 97 seems good for the car when I can get it, TESCO 99 is hit and miss, some tanks ok others Shite.
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      05-26-2014, 07:46 AM   #4
MattUK
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Nice it likes the cheaper one then John
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      05-26-2014, 08:09 AM   #5
JOHNBMWM5
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Quote:
Originally Posted by MattUK View Post
Nice it likes the cheaper one then John
Yea I just can't find anything thats better than the STD SHELL 95, car seems to love it.
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      05-26-2014, 11:06 AM   #6
RiverRunner
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Here in California, the highest readily available is 91 octane.
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      05-26-2014, 03:35 PM   #7
///SAL
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Doesnt the m5 recommend 93?
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      05-26-2014, 03:45 PM   #8
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I can get 93 in Texas, but cannot find anything higher than that.
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      05-26-2014, 03:58 PM   #9
M6-Coupe
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Quote:
Originally Posted by ///SAL View Post
Doesnt the m5 recommend 93?
BMW for S63tu recommends RON 95-98 which is equal to minimum AKI 91 in US since AKI= (MON+RON)/2
I guess in Europe gasoline is labeled with RON, but here is AKI
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      05-26-2014, 04:15 PM   #10
///SAL
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Quote:
Originally Posted by M6-Coupe
Quote:
Originally Posted by ///SAL View Post
Doesnt the m5 recommend 93?
BMW for S63tu recommends RON 95-98 which is equal to minimum AKI 91 in US since AKI= (MON+RON)/2
I guess in Europe gasoline is labeled with RON, but here is AKI
On the gas door says 93 :
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      05-26-2014, 04:54 PM   #11
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Quote:
Originally Posted by ///SAL View Post
On the gas door says 93 :
Mine says AKI 91 min and E10 max!
Yours is CP?? maybe CP is different. I have no idea
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      05-27-2014, 10:03 AM   #12
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Never used anything other than V-Power. Runs fine on it as far as I can tell, maybe the ECU does not like changing the octane rating?
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      06-02-2014, 04:30 PM   #13
Harveyten
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thanks guys, only used V Power to date not getting more than 23mpg on a mixture of motorway and B road driving
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      06-03-2014, 04:03 PM   #14
michel lane
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23mpg ! I wish I was getting this ,I am averaging 18mpg at that's using 99octane on tesco. I think I need to stop using the M mode and heavy right foot ! .. Why am I talking about mpg ?
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