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05-16-2008, 12:10 AM | #1 |
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GAS Octane for the M3
In Toronto, theres Shell 91, Petro 91, Sunoco 94 etc..
Ive been using Shell 91 for my 335; should I upgrade to Sunoco 94 on my M3? |
05-16-2008, 03:06 AM | #2 |
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I go only Chevron 94 in my beast. I am sure you can run 91, but really, for the small difference in price, get the 94.
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05-16-2008, 07:14 AM | #3 |
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I think you will be fine with the Shell 91.I have to use Esso & its 91 or 92 as it is what my coporate company gas card is.I have tried a couple of tanks of Sunoco 94 and did not feel any SOP difference between the 2.
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05-16-2008, 07:17 AM | #4 |
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I go to Sunoco or Shell if I have the choice. I've heard some people say that the higher ethanol content in Sunoco 94 is a problem for high performance engines. I'm not sure whether that's true or not, or even whether Sunoco does have higher ethanol than Shell 91.
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07-02-2008, 09:00 AM | #6 |
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Drives: 2008 E93 M3 Cab SSII
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I have been using only Sunoco Ultra 94, and have not had any problems with the ethanol (they claim up to 10%). If a Sunoco is not around my 2nd choice with the Shell V-Power 91.
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