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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