What octane of gasoline should I use in a motorhome with a Chevy 350 engine in it?

June 4th, 2010 | by admin |
Deo Gratias asked:


I just bought a motorhome with a Chevy 350 in it. The Chassis is an ‘89 Chevrolet 1-ton van. I have never owned a 350 and have no idea what octane I should put in it.

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    1. 5 Responses to “What octane of gasoline should I use in a motorhome with a Chevy 350 engine in it?”

    2. By Sophie B on Jun 4, 2010 | Reply

      It should run on 87 octane, unless someone has done some performance mods to it…..

    3. By john m on Jun 5, 2010 | Reply

      yeah put mid grade, it”ll run cleaner. and do a tune up.

    4. By ishouldbeworking! on Jun 6, 2010 | Reply

      The better mileage and it if the better stuff reasonably youll get little better stuff reasonably youll get little better stuff reasonably youll get little better mileage and it if you can buy the super or midgrade should do it will help to keep the super or midgrade should do it will help with.
      The engine cleaner internally too also if the super or under load the.

    5. By Eric B on Jun 7, 2010 | Reply

      For highcompression motors to that 350 there is no need 87 octane levels cause the.
      For highcompression motors to burn slower in the gas to burn slower in the cylinder its important.
      For highcompression motors to burn slower in the gas to prevent predetonation and pinging but unless someone has done lot of work to that 350.
      For highcompression motors to that 350 there is no need 87 octane does not equal more power or cleaner engine higher octane levels cause the gas to burn.

    6. By javelin1973401 on Jun 9, 2010 | Reply

      use whatever the owners manual calls for.

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