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Old 12-19-2018, 08:34 PM
97 SL320 97 SL320 is offline
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Join Date: Jan 2012
Posts: 7,534
Quote:
Originally Posted by TheBishop View Post
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.
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.
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