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Depends on what type engine. the 2.7 L and 3.5 L are made for 87 octane fuel but can use 89 and 91. The 5.7 L can take 87 octane or 89 octane but i would use 89 for it. if i had the 6.1 hemi i would use the 91 octane cause it is a more consistent fuel.

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16y ago

What else can I help you with?