I’ve used Yamaha products in a large number of situations. They produce a lot of different things, ranging from musical instruments to motorcycles. Thus, when I was looking for a boat, I found myself drawn to boats that utilized Yamaha engines, knowing that I’d be getting a quality vehicle.
Of course, having a Yamaha engine means that my best bet would be to use motor oil that’s also been developed by Yamaha. In particular, I’ve been using Yamaha 2M oil on my boat, because I expect it to give me the best possible performance. It’s nice to find brands that you can trust like this.