When I was listening to the radio this morning, I heard a commercial for some variety of motor oil. They were advertising a special where you could buy three quarts and get the fourth one for half price. I realized then that I always heard ads for car oil on the radio, but I never have heard an ad that is specifically for any type of boat motor oil.
The only time I have seen any ads for this type of oil is when I have been watching something specifically boat related on the television. Only then are ads for Evinrude Johnson 2 stroke outboard oil ever seen. I suppose that this is mainly because boat oil is such a specialized product. Most people do not need it in their day to day lives.