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  1. S

    1986 Merc 25 hp lower unit gear lube

    Will Mobil 1 synthetic 75w90 work as a good gear lube for the lower unit on this engine? Thanks for any info.
  2. S

    Year ID

    I can't seem to find what year my 25 Mercury is. The serial # is 0A930171. Any info is much appreciated.
  3. S

    1965 Merc 200 leg oil

    What type of oil should I be using in the leg on a 1965 Merc 20hp? Will Synthetic 75w90 gear oil work? Thanks in advance.
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