BenzWorld Junior Member
Date registered: Jan 2008
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Newbie To Mercedes Benz
I just purchased a previously-owned 2003 C240 for my wife for Christmas. Needless to say, she loves it!
I've got several questions about general operations. First, the manual seems to insist that only premium(91 octane) gas be used. What is the effect/danger of using either 87 or 89 octane? The seller said it was just a matter of preference - others have said repeated long-term use of anything but premium will damage the catalytic converter.
Secondly, headlight options seem confusing. The "Auto" setting seems to be the simplest - is there a special setting to activate the fog lights? Also, sometimes one front and one back light on opposite sides come on! Any ideas on this?
Thanks for your help - I'm sure I'll have more questions "down the road!"