Octane change in slk 320 - Mercedes Benz SLK Forum

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#1 Old 04-26-2009
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Octane change in slk 320

Ihave a 2001 slk320 I have been useing 87 octane gas i decided to put 91octane in to see
if it preformed better well it didn't it would miss at 5500rpm and the CHECK ENGINE" lite came on
any oppions on that????i called MY m.b. dealer he go ahead and drive i've drove over 100 mile it still on HELP
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#2 Old 04-26-2009
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Going up to premium should not cause any problems... Maybe a conicidence..
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#3 Old 04-26-2009
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I would think that the opposite would be the case where going down to 87 would cause an issue not going up.
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