89 115hp what fuel/oil ratio

Prentissboater

Cadet
Thread starter
Joined
Jan 14, 2017
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22
What ratio does a 1989 mercury 115hp inline 4 need. Also what oil do yall recommend? Thanks
 

Alumarine

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Joined
Feb 22, 2005
Messages
3,763
Has the auto oiler been disconnected?
If so, or if it never had one then 50:1 is the ratio.
Any TCW3 oil will work.
 
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