There are many different brands of outboard oil that can be used for boats. It’s best to take a look at the motor that you have, so that you can determine which brand of oil is right for you. Generally, most people choose to match up the oil that they have with the type of motor that’s being used on the boat.
For example, my boat runs with an Evinrude motor, so I use Evinrude oil on the boat when I’m performing its maintenance. It’s important for me to be able to go boating whenever I please, so I’ve made sure that the maintenance I do on the boat is always going to be as effective as possible.