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Old 05-05-2012, 12:06 AM   #1
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Default who's buring premium gas?

just wondering who buying for the boat and the reasons....

power or to avoid the ethonol?

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Old 05-05-2012, 01:11 AM   #2
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I run regular out here in California on a Mercruiser 350 Horizon..........runs great.......

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Old 05-05-2012, 01:40 AM   #3

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you know...I've only ran high test in a corvette I built up many many moons ago.....that engine had to run on 98octaine......but my boat runs on regular with no problem....both engines just purrrrrs....

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Old 05-05-2012, 02:13 AM   #4
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Default in the heart of corn country in the Peoria area of the Illinois river all the marina's gas docks sell non ethanol gas.

I have always used regular with my 5.0L engines with no problems
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Old 05-05-2012, 05:22 PM   #5
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Ethanol Free is all I burn !!
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Old 05-08-2012, 12:55 PM   #6

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All the gas docks in my area only sell Mid Grade and High Test. I use the Mid Grade. Not much point in using High Test unless you're running a high compression engine. Take a look at the Merc specs and I believe they suggest 89 octane.
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Old 05-14-2012, 04:51 PM   #7
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So far I've only run regular 89 octane.
most pumps labelled as "may contain up to 10% ethanol" so put startron additive in..
Been running excellent! (3.0L merc)

1997 1700SR "MaKs RAT attack"
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