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oil ratio for a 1956 fisherman 5.5??

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  • oil ratio for a 1956 fisherman 5.5??

    I have a 1956 fisherman 5.5hp motor and i cant seem to figure out what ratio to use can someone PLEASE help me out?

  • #2
    Re: oil ratio for a 1956 fisherman 5.5??

    20:1 is the recommended mix

    See http://www.evinrude.com/en-US/About.Us/FAQ/Oil.Fuel.htm

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    • #3
      Re: oil ratio for a 1956 fisherman 5.5??

      24/1
      author unknown: It's almost beyond the point of bearable how torturous it is to try to have any dignity in being a Vikings fan..

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      • #4
        Re: oil ratio for a 1956 fisherman 5.5??

        I run 24:1 in my 55.
        sigpicSignature- If you have fuel and spark- Have you checked compression?

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        • #5
          Re: oil ratio for a 1956 fisherman 5.5??

          For many years OMC recommended 24:1 in pre 1964 outboards, but recently BRP has specified 20:1 for pre 1958 models.

          I have no idea why the change. There are thousands of '50s JohnnyRudes out there that have been successfully using 24:1 for over 50 years. I used 24:1 in all of my pre-1964 OMC outboards after the 1964 spec was published, but before that I used what was recommended at the time, including 16:1 in a few.

          Safest bet is 20:1, but if she were mine I would use 24:1 simply because a quart of oil is a very convenient amount to add to a 6 gallon tank. It would be a pain in the butt to have to add an additional 6.4 ounces.
          sigpic

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          • #6
            Re: oil ratio for a 1956 fisherman 5.5??

            It would be a pain in the butt to have to add an additional 6.4 ounces.

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            • #7
              Re: oil ratio for a 1956 fisherman 5.5??

              We did discover the metric system a number of years ago--or at least we tried to. The main difference is we all had to buy another set of tools. And we still can't get it through our thick stupid heads. But we do understand a litre of drinks. Now, if the rest of the world would convert to inches, -----nah, not going to happen either.

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              • #8
                Re: oil ratio for a 1956 fisherman 5.5??

                Ahhhh yes, the ole' metric system.
                Admiral Zephyr

                1941 Johnson HD-20 (in restoration)
                1947 Sea King 5hp
                1948 Evinrude Sportsman
                1951 Evinrude Fastwin
                1955 Johnson CD-12
                1955 Johnson RD-17
                1955 Evinrude Big Twin
                1956 Johnson RD-18
                1957 Evinrude Big Twin
                1958 Evinrude Fisherman
                1958 Johnson FDE-12
                1959 Johnson RDSL-21B
                1974 Tanaka 1hp (screamin' drink mixer )

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                • #9
                  Re: oil ratio for a 1956 fisherman 5.5??

                  We're on it Vic, have been for years.
                  sigpicSignature- If you have fuel and spark- Have you checked compression?

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                  • #10
                    Re: oil ratio for a 1956 fisherman 5.5??

                    So just how would that simplify mixing 20:1 in a 6 US Gallon tank??

                    The 6USG tank is standard here, and has been for at least 60 years. What could be simpler than 1 qt oil for the 24:1 outboards and 1 pint oil for the 50:1 (really 48:1) ones?? The oil usually comes in pint and quart containers.

                    Maybe you use 20 liter tanks?? That could explain the Canuck company asking for 20:1 and selling the oil by the liter.
                    sigpic

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                    • #11
                      Re: oil ratio for a 1956 fisherman 5.5??

                      So just how would that simplify mixing 20:1 in a 6 US Gallon tank??

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                      • #12
                        Re: oil ratio for a 1956 fisherman 5.5??

                        I agree that it would be simpler IF we could buy petrol and TC-W3 oil by the liter and were willing to not fill our tanks.

                        We can't, so it is simpler to add 1 quart of TC-W3 to 6 gallons and settle for 24:1.

                        America lead the world? Well, maybe in some non-technical fields, but Germany is the technology leader.
                        sigpic

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                        • #13
                          Re: oil ratio for a 1956 fisherman 5.5??

                          Originally posted by JB View Post
                          America lead the world? Well, maybe in some non-technical fields, but Germany is the technology leader.
                          Japan is IMO, they've got stuff over there that would blow Germany's mind.
                          sigpicSignature- If you have fuel and spark- Have you checked compression?

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                          • #14
                            Re: oil ratio for a 1956 fisherman 5.5??

                            Vic, How do they sell beer in the UK. Pints is it?

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                            • #15
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                              Re: oil ratio for a 1956 fisherman 5.5??

                              My 1958 five and a half evinrude fisherman has a label inside the hood, it specifies one half pint of SAE 30wt outboard or SAE automitive motor oil with each gallon of regular gasoline.
                              Thats 3 pints per 6 gal.
                              Attached Files
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                              '67 MFG Westfield Regal
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