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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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