The Right Yamaha Oil for a WaveRunner to Use
Since Yamaha is a very diverse brand, it is not surprising that they manufacture a large assortment of different types of oil. They have to have oil that will work in vehicles that move through the water in addition to those that move through mud and snow. This requires a lot of different types of oil with additives that are good for the right kind of situation.
If you are trying to find the right type of Yamaha oil to run a WaveRunner, this is different oil than is used in just a standard boat. Rather than using Yamaha 2M, which you would with many different outboard motors, you must make sure that you use Yamaha 2W. This type of oil is specifically designed for WaveRunners and other small watercrafts.