Ok; respectfully.... you guys now have me totally confused...what one swears 
by, then other would "never" do....we mere mortals, (as in not mechanics, 
scientists, or otherwise experts in the field), need to know what we can 
reliably do for our good old Yanmars...  
so, can I use Rotella for diesel, (30 wt per C&C manual) or not...and even if 
not required, does it hurt to change the filter every year whether need or 
not...?  
 
Many thanks and please know that I, for one, love to see and partake in this 
kind of discussion, I just need to know what to do...

Richard
 s/v Bushmark4: 1985 C&C 37 CB; Ohio River, Miel 584.4


Richard N. Bush 
2950 Breckenridge Lane, Suite Nine 
Louisville, Kentucky 40220-1462 
502-584-7255 
 
-----Original Message-----
From: Andrew Burton via CnC-List <cnc-list@cnc-list.com>
To: cnc-list <cnc-list@cnc-list.com>
Cc: Andrew Burton <a.burton.sai...@gmail.com>
Sent: Mon, Sep 2, 2019 10:12 am
Subject: Re: Stus-List engine oil

For what it's worth, I use non synthetics oils and I wouldn’t think of not 
change the filter with each oil change. When I installed the new engine in my 
40 two years ago I asked the mechanic about using synthetic oil and was told 
absolutely not! For the reasons already explained here.
Andy

Andrew Burton139 Tuckerman AveMiddletown, RI USA    02842
www.burtonsailing.comhttp://sites.google.com/site/andrewburtonyachtservices/+401
 965-5260
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