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Octane Booster vs 100 Octane?

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Octane Booster vs 100 Octane?

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Old 03-04-2012 | 06:23 AM
  #11  
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Pump the gas out into your truck or car and start over.
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Old 03-04-2012 | 09:54 AM
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Take out all the old fuel and run your first tank with straight 100LL. Top it with 100LL before your last run, and top it after when putting away for the winter. It is much better on your fuel system than pump gas. It has no ethanol, I can't believe nobody mentioned that yet.
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Old 03-04-2012 | 12:54 PM
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Its only 2 month old fuel. Adding 5 gallons of the 100 octane will be more than adequate.
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Old 03-04-2012 | 01:17 PM
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I only run 100LL, nothing else, but I can write it off, so it ends up being cheaper than pump gas at the marina. Love the smell, and the internals are always very clean when the engine is opened up.
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Old 03-04-2012 | 01:33 PM
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Originally Posted by 302Sport
Take out all the old fuel and run your first tank with straight 100LL. Top it with 100LL before your last run, and top it after when putting away for the winter. It is much better on your fuel system than pump gas. It has no ethanol, I can't believe nobody mentioned that yet.
Couldn't running 100octane be harmful to your engine if your engine was only designed to run on 91?
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Old 03-04-2012 | 01:59 PM
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Originally Posted by Racerngr1
Couldn't running 100octane be harmful to your engine if your engine was only designed to run on 91?
Nope just more expensive.
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Old 03-04-2012 | 02:32 PM
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Originally Posted by Poker~N~Run
Nope just more expensive.
Good to know.
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Old 03-05-2012 | 12:41 AM
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Originally Posted by Poker~N~Run
Nope just more expensive.
and you will actually lose HP if the engine was designed to run on 91 octane. You should also really add some Marvel's Mystery oil to it fi you run it straight.
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Old 03-05-2012 | 08:43 AM
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Why marvel??? The valves love the lead......
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Old 03-05-2012 | 08:56 AM
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This is from another thread.....

Originally Posted by 44MTI
If your choice is pump gas or 100ll av gas I would go with the 100ll. I had some 1050's that were set up a little on the lean side for 93, I decided to run the av gas and never had a problem and I ran this boat hard.
I spoke with Mike at sterling and he said the av gas was much superior to pump fuel and that the valves would really like the lead content. He did say that race fuel would be his first choice though. Just my experience..
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