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  1. 2006 390c 5.7 hemi gas grade use?

    Chrysler 300 General Discussion
    What's up guys, so my question is what's the best or roccommemded gas grade use for a 2006 Chrysler 300c hemi? Since I bought my 300 I've only use the most expensive grade gas, but lately I've be putting the cheapest one 87. Is there a difference if I change it and keep using the 87 grade? Will...