Name:   GoneFishin - Subject:   Yamaha four stroke Date:   3/13/2017 1:07:29 PM

Considering the cost of the motor and how often you have to change the oil, I have always used Yamaha in my 4 stroke. To me, the cost of the oil is small compared to owning a boat. I also use Yamaha Ring Free Additive each time I fill up along wiith Sta Bil. I use only NON ethenol gas.