Originally Posted by mikeg205
Yes. Combustion contaminants are in the oil. Even though there are additives to buffer the metal in the engine, the oil and additives will oxidize over time.
Plus oil is cheap compared to an engine.... don't forget a new filter..
Good answer. Next question.....when you start your boat in the spring and burn out the fogging oil......you know that small cloud of smoke.....what volume of contaminants go into your oil? And shouldn't one also change their oil after that?