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· bitter old man
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1,547 Posts
You may never hear light detnation, but heavy detonation is unmistakable clattering, sort of like the HLA clatter on startup after changing oil.
 

· 265k miles and counting..
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5,694 Posts
You're wrong.Higher octane gas is higher due to slower burn speed,thus it is less prone to pre ignition.So,Higher octane gas has a slower burn rate.Remember that octane rating is an indicator of detonation resistance.I find my car a little slower if I run premium as opposed to a lower octane fuel that has the correct burn rate to work with the combustion chamber design of my engine.
 
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