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Old 10-08-2009, 11:05 PM
coyote19 coyote19 is offline
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Join Date: Oct 2009
Age: 49
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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The manual recommends 89 and says there is no benefit with 91. I have been running 87 and cannot tell a difference at all.
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