Gas to Outboard Oil Ratios
When you are using oil in your outboard motor, you have to make sure to use the right amount of oil in the gas that you put in the boat. This ratio depends greatly upon what type of motor you are using and what the motor is for. For example, the ratio for oil in a personal water craft could be different from the ratio that you would use for other engines.
Typically, you can find the gas to outboard oil ratio in an owner’s manual for the motor that you are using. If you no longer have the owner’s manual, you can sometimes find them online. You can also access ratio calculators online. Usually the ratio is about 50:1, for outboard motors, but following the guidelines that a manufacturer gives you is probably best.