Octane question.

silvergts1998 · 08-30-2008, 02:31 PM

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?

amdeutsch · 08-30-2008, 02:41 PM

Quote:

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.

silvergts1998 · 08-30-2008, 06:28 PM

Quote:

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.

silvergts1998 · 08-30-2008, 06:33 PM

found it. played a little more with the search words. thanks.

08-30-2008, 02:31 PM	#1
silvergts1998 Almost a Member! Join Date: Jun 2007 Location: Louisville, KY Posts: 63	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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08-30-2008, 06:33 PM	#4
silvergts1998 Almost a Member! Join Date: Jun 2007 Location: Louisville, KY Posts: 63	found it. played a little more with the search words. thanks.