[C320-list] Transmission oil change

[Jon Vez]

Hi Daryl,
Based on your hull number I believe you have the Euro engine. Either will work fine per Yanmar. I used 15w 40 in both my engine and Tranny on my 320. I happen to use straight 30 on my current YM30. 
I would go with whichever is already in there. If not sure, 15w is easier since you already have it for the engine.
Typically 15 40 is recommended for colder climates...

Sent from my iPad

> On Apr 14, 2016, at 4:36 PM, Daryl Hunt <drhunt at rochester.rr.com> wrote:
> 
> I'm about to change the transmission gear oil on my Yanmar 3GM30F (Japan) diesel.  I changed the crankcase oil before haulout last fall with Shell Rotella T 15W40.  The Yanmar Operators Manual says to use the same oil for the gear case as the crankcase.  However, my PO left a quart of CD 30 oil labeled "For Transmission" and a Yanmar (Japan) manual "Maintenance of Pleasureboat Diesel Engine - GM Series" aboard specifies CD 10W15 for engine and CD 30 for gear oil.  Since Believe's engine is the Japan version, I'm leaning toward the CD 30 oil.   Make sense?
> -- 
> /fair winds,//
> //Daryl Hunt//
> //C320 #660 "Believe"//
> //Rochester, NY - Lake Ontario /
> 
> 
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