What is the fuel mix ratio for a Johnson 150 hp?

The fuel mix ratio for a Johnson 150 hp outboard motor typically requires a mixture of 50:1, which means 50 parts gasoline to 1 part 2-stroke oil. This translates to about 2.6 ounces of oil per gallon of gasoline. However, it's always best to consult the owner's manual or manufacturer recommendations for the specific model to ensure proper mixing ratiOS.