Originally Posted by Mark
Here's the marine operators manual for the 2QM15: http://www.g-o.dk/Files/Billeder/PDFer/YANMAR/Instruktionsbger/2QM15.pdf

It says to change with the season, 10W when it's cold and 20W when it's warm, 30 W or 40W when hot, and 50W when REALLY hot.

I really need to look at that bottle.


Thanks for posting that link - much appreciated. The only other one I found online for the QM was a broken link.

http://thej30manifesto.blogspot.com/