One of my friends owns a large sailboat that he loves to take out in the spring and summer. Since he’s an intelligent sailor, he also has an outboard motor that he keeps in top condition, just in case something terrible should happen to his sailboat. He used to do minimal maintenance on the motor, but one time it wasn’t working when he needed it.
He had a day out on the water where the wind died quickly. He was far out from the harbor so he had to use the motor. Of course, somehow the motor failed to sputter to life and he was stranded and had to call the coast guard. Now he uses Mercury outboard oil to keep the motor in excellent shape so it doesn’t break down when he needs it.