I did a search and I'm still confused. I bought a 2000, 200hp Johnson ocean pro the dealer says run XD 30 at twice the price of other TCW 3 oils. I don't mind paying a little more for OMC but twice is rediculous. Some people say Wal Mart TCW 3 is just as good, West Marine says their's is fine for my engine. I;m going to leave this boat in loreto mexico and want to take a lot of good oil down. <br />thanks for your opinions<br /><br />Milo