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  1. General Challenger Discussion
    I been using 87 octane like it says in the manual but I've heard that 89 is a little better but I don't know why. Also if I were to change to 89 octane is it bad if it gets mixed in with they 87 I already have in the car?
  2. General Challenger Discussion
    Hello my fellow people I recently purchase a 2020 Dodge Challenger sxt. Was wondering if putting in 89 vs 87 gas would be better or not really!?!? Also chevron or shell anyone?
  3. General Challenger Discussion
    Hi folks, I am used to running 91 octane in my cars so it's no big deal my Challenger R/T requires it. However, I was looking through the manual and noticed that automatic transmissions could use 89 octane but manual transmissions had to use 91 or higher. What is the difference in transmissions...
  4. General Challenger Discussion
    ive read a couple posts about this but still havent answered clearly my question. On the vehicle manual it says ( for manual transmissions ) that 91 octane is recommended. But i live in North Carolina where the gas options at gas stations are 87, 89, 93. So which should i use? the 89 or the 93...
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