Quote:
Originally Posted by TheBishop
The last few drives in my wife's 2003 C320 I noticed it was running rough.
She told me not to put super because it cost more.
I found out she has been putting regular gas in the car for a year.
I fussed at her and blamed the cars condition on low octane fuel.
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Better buy her something good for Christmas, regular fuel won't cause a rough idle. About all that will happen is a slight reduction of max power due to ignition timing reduction. At part throttle you won't likely notice a difference.