1957 Evinrude 35 hp Fuel Mix

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  • August 28, 2015 at 3:14 am #2377
    mgsolakis
    Participant

      I’ve been mixing at 25:1 since I got it going. The engine is a big for fuel. Well my question is can I use less modern day oil? What about using synthetic does that make a difference? Do people use synthetic outboard oil? Is modern normal 2 stroke oil better than the old stuff? I think a few interesting questions. But forgive me if they have been asked before.

      August 28, 2015 at 5:12 am #22810
      reivertom
      Participant

        US Member

        If you want it to be around for another 58 years, you had better stick to 24/1. Why risk wearing out a motor for a few ounces of oil difference? It is a lot cheaper than a rebuild or a new motor.

        August 28, 2015 at 11:22 am #22813
        kerry
        Participant

          US Member

          Synthetics generally smoke less and many are biodegradable. I agree, keep mixing at 24:1. Older motors sometimes require QUANTITY, not quality. Remember, these motors were not manufactured using computers, CNC machines, etc. and have larger clearances that require a thicker oil film to keep them happy.

          If you have too many, AND not enough, you're a collector.

          August 28, 2015 at 12:15 pm #22815
          frankr
          Participant

            US MEMBER PAY BY CHECK

            I use Pennzoil 100% Synthetic TC-W3 outboard oil. It does smoke less and the oil sheen on the water disappears quicker. I haven’t hung around long enough to see if it bio-degrades, but they say it does. Costs more too.

            You ask if the modern oil is better. Darn right it is. Way less carbon buildup, ring sticking, plug fouling, etc. If it is certified TC-W3 by NMMA, it has been tested and passed the test. But you gotta put it in the motor (enough), if it is going to do it’s job.

            August 28, 2015 at 9:39 pm #22847
            1946zephyr
            Participant
              quote reivertom:

              If you want it to be around for another 58 years, you had better stick to 24/1. Why risk wearing out a motor for a few ounces of oil difference? It is a lot cheaper than a rebuild or a new motor.

              Like what is said here, oil is the cheapest thing you’ll ever put in an outboard. Don’t skimp on it.
              Keep that classic oiled right and your younger generations will enjoy it too 🙂

              August 29, 2015 at 2:45 pm #22868
              mgsolakis
              Participant

                Sounds good thanks for the advice. I’ll keep it at 24:1.

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