Thread: 87 or 91 gas?
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Old 02-28-2009, 12:28 PM   #2 (permalink)
frost
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I think this has been discussed a couple times, but higher gas prevents knock. And my 350 knocks with anything less than 89, so I imagine the 370 is even more dependent on higher quality gas for knock prevention because o the compression ratio. Now is the question will it actually hurt your vehicle? Not in the short term, but could eventually hurt your engine.
I believe you can eventually damage your piston rings, damaging your pistons, so forth and so on.
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