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Ethanol Free Gas

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NickC

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I have read all of the recent post regarding Avgas vs Mogas, but I have a slightly different question:

Background - I am a business owner so I purchase large quantities of "Off-Road" diesel fuel on a monthly basis. My wholesale dealer can sell "Recreation Fuel" which is their term for 89 and 91 octane fuel without ANY Ethanol. I can purchase this fuel for a large discount if I purchase 500+ gallons, plus there is not any road tax on it as it is intended for "Recreational Use Only".

I have a 1965 Cherokee 140 - 150HP. It is rated for all of the old gas (like Avgas 80) and the previous owner ran that fuel for many, many years. What types of problems will I encounter buying unleaded fuel vs low lead? Do I need to mix oil with it to prevent engine damage? If so, what ratio and type of oil? (I was told that Marvel Mystery Oil or Shell Aviation oil would work)
 

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