If you’re new to outboard engines, you’ll have to educate yourself a little bit on the proper keep of an outboard engine in order to guarantee you are getting the most for your money. It’s often misinformation that leads to engines seizing rather than it being a problem with the engine itself. Before anything else, learn what you need to put into your engine.
The first thing to find out is what your fuel/oil ratio is for your outboard. Most manufactured before 1964 need 24:1 while 2-stroke outboards since then require a 50:1 fuel to oil mixture. Using the right oil, such as Evinrude xd50 oil, is imperative. Using the wrong oil can cause extreme problems and even ruin an engine in extreme cases.