Which grade of fuel can I use in my 300M?

Discussion in 'Chrysler 300' started by Steve, Sep 28, 2005.

  1. Steve

    Steve Guest

    I have been using regular gas for a while, is this OK?
    Steve, Sep 28, 2005
  2. Steve

    Gyzmologist Guest

    Whatever grade the owner's manual says. If you use a lower grade than what
    the manual states, you will see a drop in performance and gas mileage. As
    strange as this may sound, if you use a higher grade than what the manual
    states, your gas mileage will drop, it will be harder to start, and idle
    will be rougher.

    Gyzmologist, Sep 28, 2005
  3. Steve

    NJ Vike Guest

    I use 87 octane and it runs fine. I'm pretty sure I've read this in the
    manual when I first purchased this fine vehicle :) I have used 91
    (midrange) on a couple of occasions but it didn't do anything for

    Come to think about it, I think I've seen more of the new 300s than I do of
    the older style ones?

    I wonder where I can get this information from?


    "Now Phoebe Snow direct can go
    from thirty-third to Buffalo.
    From Broadway bright the tubes run right
    Into the Road of Anthracite"
    Erie - Lackawanna
    NJ Vike, Sep 28, 2005
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