I need some help identifying the year of my engine as I recently purchased a Procraft bass boat with a 75hp Mariner engine that is oil injected with electric start and power trim. Along with a manual I was wanting to know the preferred type of oil and gas to use for optimal performance. The serial number on the motor is OB219180 and that's about all I know as I am a new boat owner. Also would like to know any other tips as far as maintainence or preventative measures that I need to be doing or checking. I have had the boat out once on the water and other than it being a little cold natured to begin with it seemed to run pretty good. I would appreciate any help or advise that you guys could give me . Thanks
