|
|
10-05-2022, 10:11
|
#1
|
Registered User
Join Date: Dec 2021
Posts: 21
|
What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
I have 40 HP YANMAR - 3JH5E - SD 50 on my sailboat. The color of the oil on dipstick looks very dark (see picture)
What Color Should Oil Be On Dipstick?
__________________
Jeanneau Sun Odyssey 490 (2023)
|
|
|
10-05-2022, 10:18
|
#2
|
Registered User
Join Date: Apr 2022
Posts: 230
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Yup, doesn't take many running hours for diesel oil to become dark. Perfectly normal.
Do watch for any other color or change in viscosity (which could be due to raw water, coolant or diesel getting into the crankcase).
|
|
|
10-05-2022, 11:10
|
#3
|
Registered User
Join Date: Dec 2013
Boat: Nauticat 33
Posts: 153
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Unless you just changed the oil 5 minutes ago, it's going to be very dark. Like 5,000 mile oil change on your Toyota dark.
|
|
|
10-05-2022, 11:21
|
#4
|
Marine Service Provider
Join Date: Sep 2021
Location: Connecticut USA
Boat: Albin 25 trawler
Posts: 132
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
One function of lube oil is to remove contaminants from your engine, [carbon, and other byproducts of combustion] and hold them in suspension, so they are removed during an oil change. Lube oil has detergent in it, to flush and clean everything it touches. Clean lube oil indicates that the oil is not flushing contaminants from your engine.
Your oil is performing it's intended function. Joe
Quote:
Originally Posted by blue-moon
I have 40 HP YANMAR - 3JH5E - SD 50 on my sailboat. The color of the oil on dipstick looks very dark (see picture)
What Color Should Oil Be On Dipstick?
|
|
|
|
10-05-2022, 14:06
|
#5
|
Registered User
Join Date: Jul 2019
Location: LI, NY,USA
Boat: 2010 Jeanneau SO 44i
Posts: 756
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
I have a 4jh5e with 4 k nm on it, the manual says every 200 hrs or 1 year, I change every 100ish and my oil on removal is dark yet translucent and viscus, I can not tell from the photo, I would have a note of concern if the oil on that stick in your picture if it were black opaque and thin in viscosity.
|
|
|
10-05-2022, 14:36
|
#6
|
Registered User
Join Date: Sep 2010
Location: Oregon City, OR
Boat: 37 Uniflite Coastal Cruiser
Posts: 800
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Is this your first diesel boat? Diesel leaves some soot behind as it burns. The engine oil quickly acquires an inky appearance.
|
|
|
10-05-2022, 14:43
|
#7
|
Registered User
Join Date: Sep 2010
Posts: 74
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
My last boat with MD7A Volvo the oil stayed fairly clear between 100 hour oil changes and.ran.fine. Does clean oil indicate an internal problem?
|
|
|
10-05-2022, 14:57
|
#8
|
Registered User
Join Date: Mar 2020
Location: Fond du Lac WI
Boat: Watkins 27 - 27'
Posts: 922
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Black, unless you just changed your oil.
Oil color on the dipstick in the picture is normal.
Now a question for the OP. When was the oil last changed?
__________________
"you ain't never smelled diesel 'til you've snorkled a submarine in a tail-wind"
|
|
|
10-05-2022, 17:36
|
#9
|
Registered User
Join Date: Mar 2015
Location: Boston's North Shore
Boat: Pearson 10M
Posts: 839
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
BLACK
|
|
|
10-05-2022, 18:00
|
#10
|
Registered User
Join Date: Aug 2016
Location: Long Island, NY
Boat: Cal 33-2
Posts: 452
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Big difference depending on how complete you are able to remove the old oil during an oil change. In most marine diesels you are removing it via the dipstick tube which usually leaves a small amount of old dirty oil in the crankcase. Put in new oil and run the engine for even a few minutes and the oil is black.
__________________
S/V First Tracks
1985 Cal 33-2
|
|
|
10-05-2022, 19:40
|
#11
|
Registered User
Join Date: Dec 2008
Location: Monterey, CA
Boat: '14 Greenline 33 Hybrid m/v
Posts: 332
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Quote:
Originally Posted by cofc
Unless you just changed the oil 5 minutes ago, it's going to be very dark. Like 5,000 mile oil change on your Toyota dark.
|
Yep, even @ 230hrs when I got my boat w/ VW 165HP TDi, black right after a 6L oil & filter change and run for a couple of minutes.
Toyotas though?! My '06 Highlander Hybrid V6 w/ 130,000 miles - as clean as baby oil at change, never burns a drop. The '16 Camry Hybrid, at 40,000 mi has burned maybe 1/4L at change time, and takes on a slight honey color.
|
|
|
11-05-2022, 03:03
|
#12
|
Registered User
Join Date: Oct 2018
Location: Toronto, Ontario
Posts: 2,690
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Quote:
Originally Posted by Kd9truck
I have a 4jh5e with 4 k nm on it, the manual says every 200 hrs or 1 year; I change every 100ish and my oil on removal is dark yet translucent and viscus, I can not tell from the photo, I would have a note of concern if the oil on that stick in your picture if it were black opaque and thin in viscosity.
|
This is a wild spec, isn't it? Especially for recreational boaters, who would find it hard to reach 50 hours a season when mostly using the engine for going in to and out of their home harbour(s).
The crucial part is at least once, if not twice, annually - and if you haul in the Fall, as part of winterization, do a complete oil + filter change before she sits for 6 months on the hard, so all the crap sususpended in the oil is not sitting in the engine while the boat is laid up.
LW77
|
|
|
11-05-2022, 06:22
|
#13
|
Registered User
Join Date: Nov 2005
Location: Oyster BAy NY
Boat: Catalina Mk1 36
Posts: 85
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Just as second vote on oil left in the crankcase after draining from the dipstick, often the engine is tipped down in the stern end to match into the drive shaft. There may be as much as a pint of "old" oil left behind. Starting after your oil change will almost immediately turn things black.
__________________
G
|
|
|
11-05-2022, 06:43
|
#14
|
CLOD
Join Date: Jul 2007
Location: being planted in Jacksonville Fl
Boat: none
Posts: 20,415
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
Quote:
Originally Posted by blue-moon
I have 40 HP YANMAR - 3JH5E - SD 50 on my sailboat. The color of the oil on dipstick looks very dark (see picture)
What Color Should Oil Be On Dipstick?
|
what color was it after you changed it last (after running and rechecking the level)
yours looks "normal" mostly to me
__________________
Don't ask a bunch of unknown forum people if it is OK to do something on YOUR boat. It is your boat, do what you want!
|
|
|
11-05-2022, 07:04
|
#15
|
Registered User
Join Date: Sep 2014
Location: POW Alaska
Boat: Trlåren 31
Posts: 340
|
Re: What Color Should Oil Be On Dipstick for 40 HP YANMAR - 3JH5E - SD 50?
When my Westerbeke had a leaking seal on the drive shaft of its fuel injection pump, the engine oil would blacken within an hour or so from the diesel washing the timing gears.
After I had the pump serviced, the oil would blacken much more slowly and still have some translucence after 50-60 hours. It wasn't much but it was clearly discernable from the prior state.
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Rate This Thread |
Linear Mode
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Advertise Here
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
Vendor Spotlight |
|
|
|
|
|