Recent Topics
WoO driver Jason Johnson injured
by bdcardinal
06/24/18 01:08 AM
Plastic burning smell when WOT
by Jaha24k
06/24/18 12:57 AM
Duckham's 15w50 Oil 12 one liter bottles
by Lolvoguy
06/24/18 12:00 AM
Ruger LCP .380
by PW01
06/23/18 11:24 PM
Launching boat with stick shift
by troutfisher
06/23/18 11:22 PM
Free oil
by Spitter
06/23/18 10:53 PM
Porsche Panamera buying advice
by CharlieBauer
06/23/18 10:04 PM
RC cars
by red7404
06/23/18 09:36 PM
Any Good 4K Movies ?
by Warstud
06/23/18 09:06 PM
Gray on Oil Dipstick?
by chinee
06/23/18 08:41 PM
Clear plastic scratch remover?
by Quattro Pete
06/23/18 08:15 PM
Parking wars show.
by Chris142
06/23/18 08:15 PM
set for years
by 93cruiser
06/23/18 08:07 PM
Looking to replace 2005 Sienna with SUV
by i6pwr
06/23/18 07:26 PM
Trying to fix chainsaw
by turtlevette
06/23/18 06:48 PM
tire rotation
by marine65
06/23/18 06:48 PM
Reese hitch $30 Walmart YMMV
by pda1122
06/23/18 06:14 PM
Managing Anger During Unexpected Tire Change
by TheLawnRanger
06/23/18 06:14 PM
2016 Honda Pilot appears to be consuming oil
by pilot1226
06/23/18 06:00 PM
New belt squeal cause damage to belt?
by pda1122
06/23/18 05:33 PM
Newest Members
bwechols, bowupid, pod423, lemaitrix, azzid0906
65303 Registered Users
Who's Online
14 registered (billt460, Farmer, Deltona, 4WD, chainblu, AMC), 793 Guests and 36 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65303 Members
67 Forums
285889 Topics
4771006 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 3 1 2 3 >
Topic Options
#4612880 - 12/24/17 09:30 AM How long after a diesel OC does the oil turn dark?
atikovi Offline


Registered: 04/27/10
Posts: 249
Loc: Suburban Washington DC
I know dark oil in a diesel doesn't mean it's bad or hasn't been changed in a long time but how soon after an oil and filter change will it turn black? And does the oil in newer clean diesel engines stay clearer longer? Have a 92 Chevy with a 6.5TD that I bought 7 years ago that's been sitting and will do my first oil change on it. Will probably do a second one after a few miles to get everything cleaned out.

Top
#4612883 - 12/24/17 09:34 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
5AcresAndAFool Offline


Registered: 12/18/16
Posts: 421
Loc: Indiana
Have a 09 6.4l Powerstroke in a work truck and it stays clean looking for about 5 minutes after you change it...lol

Not quite that extreme but after it runs you start to see some darkening in the new oil and after a few days you cant tell it has been changed recently.

AFAIK even new diesels darken their oil quickly, unless something has changed in the past few years.

Top
#4612891 - 12/24/17 09:40 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
bullwinkle Offline


Registered: 10/09/04
Posts: 7671
Loc: Cincinnati, OH, USA
It depends on the diesel engine-for instance, the 6.2 GMC in my sig will actually stay reasonably clear for 1000-1500 miles, but the Cummins in the Ram, with it's in-cylinder EGR and 3rd injection event, gets pretty black in the first couple miles. My old '02 Ram Cummins with VP44 IP and no EGR would also take 1000 miles or so to turn black.
_________________________
06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

Top
#4612895 - 12/24/17 09:42 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
Artem Offline


Registered: 10/30/10
Posts: 5117
Loc: Florida
When I disabled all the emissions equipment in my 2004 Volvo Semi, the oil would stay clean for THOUSANDS of miles.

With EGR working, the oil was black right after an oil change during the oil level check. duh
_________________________
2014 Mazda 3 Hatch 2.0L & 6spd - Idemitsu 0w20 Synthetic @ $0.75 a quart.

Top
#4612897 - 12/24/17 09:43 AM Re: How long after a diesel OC does the oil turn dark? [Re: 5AcresAndAFool]
fdcg27 Offline


Registered: 09/25/09
Posts: 15718
Loc: OH
Same for the old Mercedes diesels I had. The oil darkened very quickly after a change.
The oil would drain out jet black, darker than anything you'd ever see with a gasser and also had a distinctive scent.
_________________________
17 Forester 12K MSS 0W-20
12 Accord LX 86K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

Top
#4612902 - 12/24/17 09:50 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
UncleDave Offline


Registered: 06/02/14
Posts: 1646
Loc: Ca.
With a standard fill flow filter?

Within 5 minutes.

With a bypass filter, or a dual stage strata pour venturi - its stays clear a long time .

UD
_________________________
Uncle Dave
Cat 3126/2 MB3500/Titan/RX400H/17 Ridgeline
700HP V10/ 725HP BBC/ Raptor 700/ KFX450/ YZ250/Onan 8K/ Cat3011C

Top
#4612905 - 12/24/17 09:57 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
Alex_V Offline


Registered: 04/10/16
Posts: 1155
Loc: Campbellsville, KY
Don't expect it to be clean for more than just a couple minutes, any time soon. I can't speak for the newer, cleaner, common-rail diesels, but every mech. injection oil burner I've changed oil on - even ones that were serviced regularly, at mfg. intervals - it's pretty much black when you check the level after start-up. The only exceptions to that I've seen (with conventional filtration) are engines that were substantially, regularly over-serviced.


Edited by Alex_V (12/24/17 09:58 AM)
_________________________
I like Chevy and Valvoline.

'13 Cruze, 1.4T, 112K
'85 GMC C3500, 454, 130K
'82 Mercedes 300CD, OM617 turbo, 167K
'67 Suburban, 350, 331K

Top
#4612910 - 12/24/17 10:06 AM Re: How long after a diesel OC does the oil turn dark? [Re: fdcg27]
JHZR2 Offline



Registered: 12/14/02
Posts: 41802
Loc: New Jersey
Originally Posted By: fdcg27
Same for the old Mercedes diesels I had. The oil darkened very quickly after a change.
The oil would drain out jet black, darker than anything you'd ever see with a gasser and also had a distinctive scent.


That is my experience too. It doesn't take much carbon black to make ink. It doesn't take much oil residue to make the oil go jet black.

Top
#4612911 - 12/24/17 10:06 AM Re: How long after a diesel OC does the oil turn dark? [Re: Alex_V]
2015_PSD Offline


Registered: 09/26/10
Posts: 7243
Loc: SE Texas
Originally Posted By: Alex_V
I can't speak for the newer, cleaner, common-rail diesels...
I have a 2015 Ford 6.7L Powerstroke and it takes minutes for the oil to begin to turn black, but it remains dark translucent for about 100-500 miles (depending on regens) and after that it is coal black (and stains like it too).
_________________________
2018 MB AMG GLC43 3.0L Coupe - M1 0W-40/OEM
2018 MB C300 2.0L - M1 0W-40/OEM
2015 F-250 6.7L PS Diesel - Delo 5W-40/CQ Blue
2014 Explorer 3.5L Limited - M1 AFE 0W-20/FU

Top
#4612923 - 12/24/17 10:16 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
AZjeff Offline


Registered: 01/14/11
Posts: 2650
Loc: PV Az
In the Duramax I had it stayed clean until I poured it in the filler.
_________________________
86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP *gasp*
16 Silverado 1500 4.3 Ecotec3, DI, AFM 5W-30 PP

Why know when you can guess?!


Top
#4612924 - 12/24/17 10:17 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
Chris142 Offline


Registered: 06/05/03
Posts: 16835
Loc: Deplorable in apple valley, ca
My 87.... as soon as you pour it in.
_________________________
02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40

Top
#4612932 - 12/24/17 10:27 AM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
Donald Offline


Registered: 03/21/04
Posts: 20469
Loc: Upstate NY
In my Powerstroke I do not change the bypass every time so some old oil is in the bypass filter. Turns black when checking the dipstick after the initial start-up after the oil change.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


Top
#4613206 - 12/24/17 03:40 PM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
Silk Online   content


Registered: 07/26/03
Posts: 4566
Loc: New Zealand
Do a blotter test after you've changed the oil - it won't be as dirty as it looks, the test will come out like clean oil.
_________________________
1987 BMW R65 - Penrite V Twin 20/50
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.

Top
#4613333 - 12/24/17 07:08 PM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
atikovi Offline


Registered: 04/27/10
Posts: 249
Loc: Suburban Washington DC
Can I use Lubriguard 15W40 CJ-4/SM I've had on the shelf for years? Don't expect to start the truck below 20F but the 15W seems thick for an engine that has high compression already working against it in cold start ups.

Top
#4613361 - 12/24/17 07:51 PM Re: How long after a diesel OC does the oil turn dark? [Re: atikovi]
Linctex Offline


Registered: 12/31/16
Posts: 6160
Loc: Waco, TX
Originally Posted By: atikovi
Can I use Lubriguard 15W40 CJ-4/SM I've had on the shelf for years? Don't expect to start the truck below 20F but the 15W seems thick for an engine that has high compression already working against it in cold start ups.


All through the 80's and 90's that was all we used in North Dakota winters.

Synthetic oil that was less that $10 a quart (!) didn't really exist much.

I hand-crank started a Farmall M with 30W in it when it was -35*F. It lit right off.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
Page 1 of 3 1 2 3 >