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Old 15th June 2018, 04:14 PM   #1
DMC
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Default Fuel for E92 M3 - Octane booster?

Hi

Should I be running my M3 on super unleaded? I have just bought it and as I have mostly ever had diesel cars, I am not so sure if regular unleaded is fine for them, or if any octane booster needs added to the regular stuff? If so what brands etc are recommended

Thanks
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Old 15th June 2018, 04:35 PM   #2
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Always use super unleaded. It tells you what to use in the fuel flap. Mine ran best on BP ultimate. Tesco was awful
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Old 15th June 2018, 04:58 PM   #3
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Sainsbury’s super unleaded worked best in my E92.

Shell optimax was fine, but the VPower that replaced it wasn’t anywhere as good, apparently to do with an engine sensor not being able to cope with the bio ethanol content, which matches what Ian saw with the Tesco super.

Sainsbury’s super is all oil derived, no bio content at all.
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Old 9th July 2018, 09:44 PM   #4
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Cheers for the replies

Have been running super in it since, but I have recently switched jobs and unfortunately super is at least an hour round trip to get now. Any recommendations on additive to add to normal unleaded?
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Old 9th July 2018, 09:58 PM   #5
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Quote:
Originally Posted by AndyE View Post
Sainsbury’s super unleaded worked best in my E92.

Shell optimax was fine, but the VPower that replaced it wasn’t anywhere as good, apparently to do with an engine sensor not being able to cope with the bio ethanol content, which matches what Ian saw with the Tesco super.

Sainsbury’s super is all oil derived, no bio content at all.
thanks, that's interesting.
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Old 9th July 2018, 11:16 PM   #6
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I very rarely see Sainsbury's with super.
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Old 12th July 2018, 02:36 PM   #7
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Quote:
Originally Posted by AndyE View Post
Sainsbury’s super unleaded worked best in my E92.

Shell optimax was fine, but the VPower that replaced it wasn’t anywhere as good, apparently to do with an engine sensor not being able to cope with the bio ethanol content, which matches what Ian saw with the Tesco super.

Sainsbury’s super is all oil derived, no bio content at all.
Is there any way of distinguishing this by the EN/BS number which is on the pump?
Otherwise how can you find out which fuels are derived from what?
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Old 24th July 2018, 11:15 AM   #8
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I've always used Tesco 99 personally.. never noticed anything but smooth power delivery.
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Old 31st July 2018, 02:56 PM   #9
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I always run Shell Vpower unless I'm somewhere like mid-Wales where I used 2 full tanks of Tesco99 Momentum.

Vpower is like a caffeine kick for my car. The engine is very smooth and quick to rev.

Tesco99 - can't say I noticed much of a difference (maybe a tad less zip) but it doesn't contain much detergent - if any. Details used to be on their website.

Supermarket fuels generally contain far less detergents than the premium fuels. Shell Vpower contains more detergent than Shell's regular unleaded. Their website contains all the info about their fuels.
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Old 31st July 2018, 03:02 PM   #10
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Quote:
Originally Posted by DMC View Post
Cheers for the replies

Have been running super in it since, but I have recently switched jobs and unfortunately super is at least an hour round trip to get now. Any recommendations on additive to add to normal unleaded?
Millers do one. It adds 2 octanes, detergent and other good stuff. They also do a competition shot that adds 4 octanes.

I've used Millers on occasions where I couldn't find Vpower.
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Old 1st August 2018, 04:56 PM   #11
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I run only Tesco or shell 99

Wouldn’t run it on anything less,well I can’t now but even before I was mapped it was shell or Tesco 99.
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