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CLS Coupe (C219) Discuss the CLS Coupe.

Octane question.

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Old Aug 30, 2008 | 01:31 PM
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silvergts1998
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Octane question.
Can you get away with using 87 or 89 octane in these cars? Do they have knock sensors that readjust the timing? I stuck 89 in my CLS500 the other day and everything seem to be fine. This is a daily driver and I don't hot rod the car. What is your knowledge of this? Safe or not safe? Not sure what the compression ratio of a 2006 cls?
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Old Aug 30, 2008 | 01:41 PM
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Originally Posted by silvergts1998
Can you get away with using 87 or 89 octane in these cars?....What is your knowledge of this?...
1) Please RTFM.
2) Please STFF the forum.

This question has come up numerous times.
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Old Aug 30, 2008 | 05:28 PM
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Originally Posted by amdeutsch
1) Please RTFM.
2) Please STFF the forum.

This question has come up numerous times.
My apologies, but I did a search and could not find anything on it. Any suggestions what I should put down in my search? Not sure what the acronyms mean you posted.
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Old Aug 30, 2008 | 05:33 PM
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found it. played a little more with the search words. thanks.
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