I have a 1988 200 Hp Suzuki with oil injection. The guy before me had used quicksilver oil. The last time I filled I used some cheap 2 cycle oil from a convienience store (have run about an hour since). <br /><br />I now have a case of Yamalube (recomended by the marina that sold me the used boat). I have only put in the remaining Quicksilver that came with the boat and about 1 hour (running time ago) put in the cheap stuff. <br /><br />I didn't hear anything about problems with the oil, and don't have any motor problems so far. The c-store stuff is cheaper and is suposed to be mixed in the tank (I think). Will I probably be ok with the c-store oil or should I siphon it out and go with the Yamalube? Or maybe I am worrying about nothing? Thanks in advance.