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View Full Version : Yamaha 25 HP 2 stroke oil mixture


TAP3
07-29-2009, 01:38 PM
Just purchased a new yamaha 25 horse 2 stroke. After break in, it states to run 100:1 mixture. Wondering if anybody adds more oil. This motor will be used during the winter month also. Just wondering what other people are doing with mixing oil. Should be a good motor for years to come

big_crappie
07-30-2009, 10:12 AM
If you want to run 50:1 you can you will just smoke more and foul plugs. These are designed to run on 100:1 as per the manual and tech lines.