Edd, I agree with Steve and Marek. Synthetic oil is a waste in our boats.
That being said the enginrs do require to be run at cruise power 75% of max rpm
for about an hour at least once a month if it is used for weekend sailing. I
had to replace my injectors because the PO always ran the engine too slow. He
was "saving the engine". Our boats have converted tractor engines, which are
designed to operate at 75% max speed all day long. I run my 3qm30 at 2k to 2100
with over 3k hours no smoke or starting issues. I hope this helps some.
Doug MountjoysvPegasusLF38 just west of Ballard, WA.
------ Original message------From: Marek Dziedzic via CnC-ListDate: Mon, May
25, 2015 09:13To: cnc-list@cnc-list.com;Cc: Marek Dziedzic;Subject:Re:
Stus-List Darker Smoke, Harder to StartMy experience with synthetics (not with
diesels, though) is that if you use it from start, that’s great, but if you try
using the synthetics on an older engine, you are quite likely going to dissolve
some of the deposits already there and suddenly, you may find that you are
burning or losing the oil (some seals don’t seal as they used to). Not to
mention that our engines are never really stressed enough to justify the higher
cost. And most of us don’t try starting these engines in subfreezing
temperatures. So the extra temperature range that synthetics offer don’t buy us
much. But I am not the expert on oils. Marek From: Fred Hazzard via CnC-List
Sent: Monday, May 25, 2015 11:03 AMTo: cnc-list@cnc-list.com Cc: Fred Hazzard
Subject: Re: Stus-List Darker Smoke, Harder to Start What do the experts say
about synthetic oil in diesels?Fred Hazzard
S/V Fury
C&C 44
Portland, OrOn May 25, 2015 7:10 AM, "Marek Dziedzic via CnC-List"
<cnc-list@cnc-list.com> wrote:
most of the engine oils that are available today have plenty of
additives that get bad or ineffective after about 6 month in the engine. So
if you are using the engine year round, you might consider changing the oil
twice a year (at least once a year) and if you are using it less (even if you
use it for just a few hours each year), change it annually. For us, Northern
folks, this usually mean changing it in the fall. From what I read around,
there are people who change the oil in the fall and again in the spring. I
don’t, but I can understand the reasoning behind it. I hate throwing out
the good engine oil after some 25-50 h of running time, but this is a cheap
insurance for the engine. Marek 1994 C270, Legato Ottawa, on
From: Sam Salter via CnC-List Sent: Sunday, May 24, 2015 9:11 PM To: Jim
Watts via CnC-List ; 1 CnC List Cc: sam.c.sal...@gmail.com Subject: Re:
Stus-List Darker Smoke, Harder to Start Diesel engine oil is supposed
to look black - it's like that a half hour after you start the engine - by
design. sam :-) From: Jim Watts via
CnC-List Sent: Sunday, May 24, 2015 6:48 PM To: 1 CnC List
Reply To: cnc-list@cnc-list.com Cc: Jim Watts Subject: Re:
Stus-List Darker Smoke, Harder to Start It's black.
Jim Watts
Paradigm Shift
C&C 35 Mk III
Victoria, BC
On 24 May 2015 at 16:59, Sam Salter via CnC-List <cnc-list@cnc-list.com>
wrote:
What does bad lubrication oil look like? sam :-)
From: S Thomas via CnC-List
Sent: Sunday, May 24, 2015 5:01 PM To: cnc-list@cnc-list.com
Reply To: cnc-list@cnc-list.com Cc: S Thomas Subject: Re:
Stus-List Darker Smoke, Harder to Start If it
is cranking at the usual speed, then the compression might be off a bit in
one of the cylinders. This can happen if one of the piston rings has got
stuck over the winter. I would warm up the engine good and hot and then
take for a run. Run it fairly hard for a couple of hours so long as
everything appears to be ok. That should get the carbon out, if there is
any, and it might loosen up a seized ring. Black smoke is a sign of a
rich mix, but it means little if you have just started the engine after a
period of cranking it for a while. If you did not change the oil
last fall, then now is the time to change it. I don't know why, but I have
found that lubricating oil sitting for a while in diesel engines is more
likely to go bad than in gasoline engines. Maybe it is climate dependent,
but that has been my experience limited though that may be. Steve
Thomas C&C27 MKIII Port Stanley, ON ----- Original Message
----- From: Edd Schillay via CnC-List To: cnc-list Cnc-List
Cc: Edd Schillay Sent: Sunday, May 24, 2015 18:07 Subject:
Stus-List Darker Smoke, Harder to Start Listers,
I find I'm having a harder time getting the engine started and seeing a
little bit of darker smoke when it does turn over, as compared to last
season. Once running, everything seems fine -- temperature, water
flow, revolutions, etc. Any ideas or suggestions?
Usually, my solution to engine problems is "get the jib out."
All the best, Edd
------------------------------- Edd M. Schillay Starship Enterprise
NCC-1701-B C&C 37+ | City Island, NY www.StarshipSailing.com
------------------------------- 914.332.4400 | Office 914.774.9767
| Mobile ------------------------------- Sent via iPhone 6
iPhone. iTypos. iApologize
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