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  1. #1

    Default Proper oil to fuel ratio for Johnson 1973 65 hp

    Can anyone tell me the proper oil to fuel ratio on a 1973 65 horse Johnson outboard? The model number is 65 ESL-73R. Thanks!!!

    Dana

  2. #2
    Petty Officer 1st Class shipwreck's Avatar
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    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    usually 50:1 in old out boards
    i would see what others think, too

    sorry. 50:1

  3. #3
    Petty Officer 1st Class dooma_Flatchy's Avatar
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    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    Quote Originally Posted by shipwreck View Post
    usually 5:1 in old out boards
    i would see what others think, too

    5:1 or 50:1


    I think 50:1 is the correct ratio. I use 50:1 in my 77 85hp. that would be one pint of to 6 gallons of gas
    1990 Lowe 240 Pontoon/1990 75hp Mercury
    1989 Glasstream Hydrabass 17V/1988 150hp Evinrude
    An angler is a man who spends days sitting in his boat doing nothing because his wife won't let him do it at home.

  4. #4
    Petty Officer 1st Class shipwreck's Avatar
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    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    50:1, sorry

  5. #5

    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    Thanks guys for the fast replies. I'm going fishing on lake Guntersville in the morning and I didn't want to ruin my first day out in this boat.

  6. #6
    Petty Officer 1st Class shipwreck's Avatar
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    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    http://www.csgnetwork.com/marineoilfuelcalc.html
    this site will tell how many ounce per gallons of fuel at 50:1

    example 5 gallons gas is 12.8 ounces of oil (100 ml)

    have fun

  7. #7
    Petty Officer 1st Class dooma_Flatchy's Avatar
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    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    Quote Originally Posted by chieffarmer View Post
    Thanks guys for the fast replies. I'm going fishing on lake Guntersville in the morning and I didn't want to ruin my first day out in this boat.

    Hey chieffarmer,

    I just got back not too long ago this afternoon,,, I fish Guntersville every week. Where do you put in at? I use browns creek at warrington. maybe I will see you there..
    1990 Lowe 240 Pontoon/1990 75hp Mercury
    1989 Glasstream Hydrabass 17V/1988 150hp Evinrude
    An angler is a man who spends days sitting in his boat doing nothing because his wife won't let him do it at home.

  8. #8

    Default Re: Proper oil to fuel ratio for Johnson 1973 65 hp

    Small world isn't it. It's been a while, but the last time I was there I put in at Honeycomb. The fishing is usually good there. The sea weed was pretty bad though. I normally camp and fish at Smith Lake. The fishings a lot tougher to me than Guntersville, but it's closer to work. After work and I can be there in 15 minutes. Hope you have a great time and catch a bunch.

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