Long story short, I am interested in a 35 or 45 horse (yet to be determined) Mariner from late 1980s. Oil Injected. Seller said that he's only had it one year and winterized it. Hasn't added oil, just gas to the boat. Should I not look at this boat or is it possible that if he didn't use it enough that the oil in the reservoir of the tank still had some oil in it. I thought on an oil injected boat you should add or at least check it each time out.