I buy Castrol TCW-3 at Wally World for about $8.00 a gallon and use it in my 2004 225 V-Max with no problems. One of my clients is VP of Tesoro Fuel and told that TCW-3 is TCW-3 and as long as it meets or beats factory specs (which it will), it will not hurt your warranty. The main diff in the oils are additives and coloring agents.
_________________________
"FISH HARD" ~