Wayne.B wrote in
:

Once a year is plenty on a small engine that doesn't get run very
much.




http://www.searchforparts.com/import...9000_miles.php
Unless you're an Amsoil dealer, whos company only has REBOTTLING plants,
not any kind of oil refinery or synthetic oil manufacturing complex.....

http://www.yanmarmarine.com/
click Questions and Answers
on the left panel is maintenance videos.

Ignoring that he didn't TIGHTEN the "radiator cap" when he told you to, I
stand corrected by Yanmar. Oil change interval is 250 hours or once a
year, now.

I also think the video violates the Magnusson-Moss Warranty Protection Act
(15USC50 section 2300) in that he specifically tells you to use ONLY Yanmar
BRANDED impeller, oil filters, air cleaner in this video. According to
FEDERAL LAW, Magnusson-Moss REQUIRES Yanmar to provide ANY part they tell
you MUST be a Yanmar Branded part.....FREE for the entire life of the
engine, not just to the end of the warranty. He's more vague about fluids,
telling you to use Yanmar or "approved" oils, transmission fluid,
coolant....

So, I guess, once a year is now OK.....at least for those selling engines.