Thread: oil to gas ratio
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Short Wave Sportfishing Short Wave Sportfishing is offline
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First recorded activity by BoatBanter: Feb 2007
Posts: 5,649
Default oil to gas ratio
On 31 Mar 2007 12:44:35 -0700, wrote:

Hi, I just bought a used boat w/ an 1989 80 hp mercury ob. I am told
that the motor did have a oil resivior but was disabled to allow a
premix. Can anyone tell me the proper ratio to mix. I think it should
be 50:1 but am unsure thanks.

50:1 but you may want to consider 40:1 due to the age.
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