I am sure this question has been posted in the past, but I am fairly new. Does the brand of oil really make a difference? I have a 92'hp Johnson Outboard, two stroke, that I recently converted from VRO to a self-mix. I heard that I should only use OMC brand oil, as of now, I use a generic brand. The oil looks the same as a higher priced oil, but costs less. Any help would be appreciated. I will be using the boat throughout the winter, but not as often. Should I treat the fuel, or use any type of stabilizer.