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  #11  
Old 08-16-2014, 09:28 PM
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Quote:
Originally Posted by uplander View Post
run 87 you will be fine, I had the same issue on vacation. Ran 87 all week with no issues.
So, what are the long term effects of running 87 in motor that the manufacture requiems 89?
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  #12  
Old 08-17-2014, 08:01 AM
uplander uplander is offline
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I asked my marina what they thought before vacation, they said I will be fine but always try to run 91 when I can. I could not tell a difference in performance or at idle running 87.
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Old 08-17-2014, 10:38 AM
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It's usually not a problem unless the engine is being run hard. If detonation (spark knock) is heard, back off.
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  #14  
Old 08-17-2014, 10:41 AM
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Originally Posted by CantRepeat View Post
So, what are the long term effects of running 87 in motor that the manufacture requiems 89?
None. Gas loses octane rating over time but adding premium will raise it to a usable range. It won't make bad gas 'good', especially if it has ethanol, but if the only problem is low octane, it helps. If this is needed in a humid place, the last thing I would add is alcohol.
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