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    Blue colored gear oil ?

    Got an '89 Mariner OB 40 hp. Changing out the lower unit gear oil. While draining out old oil and had a blue color. Any idea what brand or made by? Is this reg/convent oil or Synthetic? I would like to use the same stuff.
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    Mariner 25hp - What year?

    Just picked up 25hp Mariner OB and would like to know what year.. The Ser# is OB294993. Any help would be greatly appreciated..
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    Evinrude 70 HP

    Just picked up a used boat. Has an Evinrude 70 HP OB motor and I'm in search of two info's needed for now to start with. Any one know What is the fuel mix ratio and the mfr year of motor. Ser # J0003147 Model # 70573-B.
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