Grade gas?

Discussion in 'Dodge Challenger General Discussions' started by NinjaMom, Dec 26, 2012.

  1. NinjaMom

    NinjaMom Member

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    Salesman said just regular unleaded. Manual mentions 91. What is everyone using in their babies? Mine is a 2013 RT.
     
  2. Rod_R

    Rod_R Full Access Member

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    My manual says regular is fine but I use Premium. It may be psychological, but I feel my car runs better and responds faster with Premium.
     
  3. Shamrox425

    Shamrox425 Member

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    I asked about that with one of the service dept guys while I was waiting for my R/T to be detailed and he said always use premium, so I took his word for it. It might very well be psychological, but I'm not willing to take that chance. A few extra cents per gallon is worth the risk.
     
  4. SRT-Tom

    SRT-Tom Well-Known Member Staff Member Super Moderator Article Writer

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    I use 91 in my SRT and it runs great. With modern computer-controlled engines, you won't damage your engine by using lower octane gas, because the computer will retard the ignition. You will only get diminished performance. Not worth it for only a few cents per gallon difference.
     
  5. Storm Rider

    Storm Rider Full Access Member

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    Our manuals say 89 or mid grade. I use 93 in my R/T.
     
  6. NinjaMom

    NinjaMom Member

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    Is your challenger an automatic or manual?
     
  7. Black Voodoo

    Black Voodoo Member

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    I've run 93 octane from day 1. It's true while you can run a lower grade, I hate the idea of timing pull when I may need all my HP the most. I also found a station here in town that has ethanol free 93 and for a few more cents a gallon, I know it's a true 93.
     
  8. Storm Rider

    Storm Rider Full Access Member

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    Mine is a 5 speed auto stick.
     
  9. NinjaMom

    NinjaMom Member

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    The manual states for the 5.7 liter automatics that regular is fine. But 5.7 liter manuals require 91 or higher. My salesman put 87 in my baby girl and tried to tell me it was ok for her. :rolleyes: :(

    I was like, "dude.... can you read?"
     
  10. 10DYRT

    10DYRT Full Access Member

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    My 2010 manual recommends 89 (mid grade) for the 5.7 auto, which is what I ran
    until I did the Trinity 91 octane tune.
    No problems with the factory tune and 89 for city and a couple 3000 mile road trips.