Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 19-09-2011, 11:11   #1
Registered User
Asmodeane's Avatar

Join Date: Dec 2010
Location: Helsinki
Boat: Albin Vega
Posts: 26
Oil Leak in Nanni Kubota 2.45 Eco

Hi guys.

I've recently bought an Albin Vega with a Nanni Kubota 2.45 Eco 10hp diesel installed in 2002, with about 200 running hours on it. The packing gland was also changed, as well as the transmission. I've ran it for around 12 hours so far, and have been really happy with the low consumption and silent as well as reliable operation.


Last time I came on board and checked the engine before heading out of the harbor, there was a small amount of oil in the sump under the engine. Not much, maybe half a shot glass (about 20ml). And it didn't leak during the last time I used the engine, but some time during the 5 days that the boat sat idle at the dock. Also, after using the engine for about three hours that evening the amount of oil didn't increase.

Is this sort of behavior normal? I don't know where the oil is coming from, couldn't see any obvious trails. Could it be the packing gland? It has some sort of an oil system itself, with a separate little oil tank.

The engine sensors didn't complain that oil was low or that it was overheating or anything either.

I guess what I am asking is, should I be worried and try to locate and fix the problem "at any cost" or just monitor for signs of it getting worse?

Asmodeane is offline   Reply With Quote
Old 19-09-2011, 20:36   #2
Eternal Member
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
Re: Oil leak in Nanni Kubota 2.45 Eco

If you don't know where it is coming from...monitor it.

Put a couple oilsorbs under the engine.

Don't use disposable they degrade into a gloppy mess when subjected to water for any length of time

Chief Engineer is offline   Reply With Quote
Old 20-09-2011, 08:31   #3
Registered User
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35 14ft.Whitehall pulling skiff.
Posts: 7,527
Images: 5
Re: Oil leak in Nanni Kubota 2.45 Eco

Check the pan bolts and other fasteners.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"
Celestialsailor is online now   Reply With Quote
Old 20-09-2011, 13:28   #4
Registered User
Hydra's Avatar

Join Date: May 2009
Location: Lorient, Brittany, France
Boat: Gib'Sea 302, 30' - Hydra
Posts: 1,151
Re: Oil Leak in Nanni Kubota 2.45 Eco

I have a Nanni 2.50 HE diesel from 1995, probably similar to your 2.45. On my engine, there is an oil overflow pipe going back to the air intake manifold, to burn the excess oil. If this pipe happens to become disconnected, some oil will flow and finally arrive in the sump.

So, I suggest that you check all pipes on the engine and the oil level on the dipstick: it should not exceed the high mark on the stick, for this excess oil will be burned in the engine, possibly causing overspeeding.

Also check the odor of the oil you found: the engine oil smells differently from the gearbox oil.

Hydra is offline   Reply With Quote
Old 20-09-2011, 23:53   #5
Registered User
Asmodeane's Avatar

Join Date: Dec 2010
Location: Helsinki
Boat: Albin Vega
Posts: 26
Re: Oil Leak in Nanni Kubota 2.45 Eco

Thank you all for your answers!

I just came back from the boat, and no more oil has leaked during the past few days that she lay at her moorings. Weird. I guess it might have been a one-off sort of thing. Perhaps it was indeed the excess oil, will have to check out the manual and see where it comes out. There is a little rubber hose hanging over the sump, coming out of the engine, and it is suspiciously oily, so maybe that's the culprit? At any rate, it is engine oil, judging by the smell. Will be lifting the boat out for the winter soon, and will check the engine thoroughly during the winterizing process.
Asmodeane is offline   Reply With Quote

oil leak

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 2gm Oil Leak Troubleshoot . . . Aotearoa Engines and Propulsion Systems 9 20-08-2015 20:12
Oil Leak cwyckham Engines and Propulsion Systems 12 04-04-2012 15:11
Main Seal Oil Leak - Why ? phmadeira Propellers & Drive Systems 7 09-09-2011 09:16
Why Two Oil Dipsticks on Perkins 4-108 ? dancamp009 Engines and Propulsion Systems 16 22-08-2011 06:45
How Do I Change My Oil ? flatlander Engines and Propulsion Systems 25 12-07-2011 16:05

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:03.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.