I use 10-30, which I think Yanmar recommends. The Rotella works well. I keep the level of oil at about 80% of full and I see very little smoke and don’t have to add oil between changes (once a season). Pete W. Siren Song C&C30-2 Irvington, Va
Sent from my iPhone > On Sep 26, 2022, at 3:51 PM, Dave S via CnC-List <cnc-list@cnc-list.com> > wrote: > > Does it matter in any practical sense whether I use 10W-30, which is > available, versus 15 W 40, which was available last time I bought a jug… > Yanmar 2GM…. Thx. > > Dave. > > Sent from my iPhone
