Hamster1221
New member
Just purchased a new 2020 Yamaha 15fmhs, dealer told me in shop to break in with petrol/oil ratio of 50:1 but the manual says 25:1.
Any advice on what I should go with?
Any advice on what I should go with?
MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone.
You are invited to join our public Boat Repair Forum to seek assistance from other members.
You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
Is this a 4 stroke ?-----Strange that you would mix gas and oil to " break in " a 4 stroke.-----In my opinion break in is hardly needed with precision manufacturing of today.