Mercury 1957 Mark 55E

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May 19, 2021 at 11:13 pm #238632
sbrown21
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Would it be alright to use 80 90 marine oil in the lower unit of this outboard ? and what is the gas oil ratio in this outboard ?
May 19, 2021 at 11:29 pm #238633
DAVID
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that lower takes grease. I use John Deer corn head grease. 25-1 till 50-1 came out so take your pick .I use about 40-1 with 50-1 oil. oil is cheaper than parts
- This reply was modified 4 years, 10 months ago by DAVID.
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