oil weight

[NNN]

I have a 2004, 3.0 Alpha one Sea Ray. What is the correct wieght of oil to use? i cannot find any information in the book. Thanks.

 

[Gunn]

Should be in an engine owners manual book that goes with the boat owners manual. But my best -guess- would be Mercruiser 25W-40. My 1995 3.0l use it and my 2003 4.3l's use it. Most Mercruiser engines use it...

Tom