Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 14-12-2009, 07:25   #1
Registered User
 
Rimica's Avatar

Join Date: Nov 2009
Location: Toronto
Boat: Beneteau 461
Posts: 22
Dirty Oil

I have a Westerbeke 64 and the oil gets dirty very quickly (30 min of use) after changing it. Is this ok? I am getting a lot of conflicting advice on this.

Good advice would be appreciated
__________________

__________________
Rimica is offline   Reply With Quote
Old 14-12-2009, 08:27   #2
Senior Cruiser
 
Sailmonkey's Avatar

Cruisers Forum Supporter

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 5,775
you will never change 100% of the oil. The remaining "Black" oil will color the clean oil very fast. An engine such as this, run under light loads, will blacken oil very quickly.
Normal.......
__________________

__________________
Sailmonkey is offline   Reply With Quote
Old 14-12-2009, 08:30   #3
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
That just happens with diesel engines. For some it happens quicker than others. I would suggest an oil analysis the next time you do an oil change. An oil analysis is a much better indication of a problem than the color of your oil. It will also tell you how "worn out"...for lack of a better word, your oil really is.
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 14-12-2009, 08:49   #4
Registered User
 
stevensc's Avatar

Join Date: Nov 2007
Location: Thibodaux, Louisiana
Boat: Monk 36 Trawler
Posts: 679
Oil in a diesel engine normally turns back after a few hours as you have found out.
You really should change oil and filters per the manufacturers recomendation in the owners manual, if you have it, or probably available online. Otherwise go with an oil analysis provider for confirmation as suggested above, about 16-20 bucks per sample around here.
Good luck
Steve
__________________
stevensc is offline   Reply With Quote
Old 14-12-2009, 09:41   #5
Registered User
 
sailvayu's Avatar

Join Date: Mar 2006
Location: Fort Myers FL
Boat: Irwin 40
Posts: 878
An oil analysis is more useful for spotting trends over a period of time not great for a one shot deal. And you are not likely to understand the report without the help of a mechanic.

The black is carbon from burnt fuel being wiped off the cylinder walls by the rings. I would not worry to much as any oil left in the pan (and there always is some) will quickly discolor the new oil. change your oil and filter regularly and enjoy your boat. Watch for excessive smoke from the engine and have a mechanic check it at least once a year.

Fair winds
Wayne Canning, AMS
projectboatzen.com
__________________
sailvayu is offline   Reply With Quote
Old 14-12-2009, 19:28   #6
Eternal Member
 
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
Westerbekes and Universals are notorious for this.

There is oil that lingers in the passages.
__________________
Chief Engineer is offline   Reply With Quote
Old 15-12-2009, 16:36   #7
Registered User
 
Rimica's Avatar

Join Date: Nov 2009
Location: Toronto
Boat: Beneteau 461
Posts: 22
Thank you all. I will get an analysis done to give me a baseline that I will monitor over the years. My brother has a Yanmar of about the same size and his oil seems to stay cleaner althought his engine has 200hrs to mine 400hrs.

In the mean time I am looking forward to next spring.
Merry Christmas
__________________
Rimica is offline   Reply With Quote
Old 15-12-2009, 17:42   #8
Ram
Registered User
 
Ram's Avatar

Cruisers Forum Supporter

Join Date: May 2005
Location: Cruising Greece
Boat: Cat in the med & Trawler in Florida
Posts: 2,298
Images: 27
my Yanmar oil looks clean 20 + hours after a change, my Isusu looks clean 20 seconds after a change!
__________________
Ram is offline   Reply With Quote
Old 15-12-2009, 19:14   #9
Don't ask if you can't handle it
 
sailorboy1's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: On the boat somewhere
Boat: Hunter 410
Posts: 12,312
I'm gald it isn't just me. Changed my oil just prior to hauling recently. Ran the engine to run the anti-freeze though and it. Checked the oil afterwards and it was dirty already. I figured I hadn't managed to suck all the old oil out and figured it was me. So a little reassuring to know this is kind of common.
__________________

__________________
sailorboy1 is offline   Reply With Quote
Reply

Tags
oil

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar Front Main Oil Seal Slings Oil quartersplash Engines and Propulsion Systems 1 06-08-2009 11:26
Dirty Diesel. Would you use this????? MarkJ Engines and Propulsion Systems 19 25-12-2008 01:44



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 04:10.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.