nastang87xx
Well-Known Member
Except that Gen 3 NA motor is a burly 12:1 compression ratio...The 5.0 should be less sensitive to low octane being NA and all, I would still advise against putting anything under 87. If you ever have to put 85 in an emergency and there is no other choice, just fill enough to get to the next town and top it with 93.
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