Oil life indicator - Page 3 - Diesel Forum - TheDieselStop.com
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post #31 of 51 (permalink) Old 11-06-2018, 02:55 PM
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Originally Posted by Tall Timbers View Post
Something is off there... Even if it is a year old I don't think the oil would be blackish with just 1300 miles on it.
Agreed. This is a new engine, there shouldn't be anything getting past the rings. Black oil means some soot is getting in from somewhere.
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post #32 of 51 (permalink) Old 11-06-2018, 06:53 PM
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Something is off there... Even if it is a year old I don't think the oil would be blackish with just 1300 miles on it.
No, it's not. The oil will be black within 20 minutes of running the engine. It's dirty. It's a diesel. That's the way these are.

The IOLM will tell you when to change. Changing before this means nothing more than you're wasting your money.

I monitor via FORScan. My IOLM goes off close to 10K. I send a sample of EVERY change to Blackstone Labs for analysis. They tell me I can add several thousand miles to my change interval (I've sent three samples now).

You're overthinking this. Follow the IOLM and you're fine.

If you use FORScan and an ODBII dongle, you can monitor how much oil life and miles are left before the IOLM will be telling you to change.

This isn't your father's engine. This is 2018, and the oil analysis I get prove this to be accurate.
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post #33 of 51 (permalink) Old 11-06-2018, 06:53 PM
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Agreed. This is a new engine, there shouldn't be anything getting past the rings. Black oil means some soot is getting in from somewhere.
Diesel newbie, huh?
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post #34 of 51 (permalink) Old 11-07-2018, 08:34 AM
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The newer oils also carry soot much better than older oils. Iím amazed at just how black that black can be. I've seen dark oils before, but the new stuff holds the carbon in suspension so well that I think you could use used oil for ink and couldn't get anything blacker.


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post #35 of 51 (permalink) Old 12-01-2018, 09:30 AM
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In the owners manual we find that oil change is due at 10,000 miles or 16,000 km. I got a message "oil change soon" at 15,500 km and "change oil" at about 15,900 km. Follow the book. It works ok. You may get a message sooner, depending on your driving conditions. The truck will tell you.
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post #36 of 51 (permalink) Old 12-24-2018, 07:23 PM
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No, it's not. The oil will be black within 20 minutes of running the engine. It's dirty. It's a diesel. That's the way these are.

On my 1999 and 2000 PSDs, the oil appeared relatively clean when I'd do the changes at 5000 mile intervals. As the trucks aged the oil eventually starting coming out dark, but not in the beginning... I guess I can only speak from my own experience. I've not had one of the 6.7s, but I wouldn't expect the oil to blacken just because it's a diesel... just from my own experience.

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post #37 of 51 (permalink) Old 12-25-2018, 01:12 AM
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Quote:
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Quote:
Originally Posted by Tall Timbers View Post
Something is off there... Even if it is a year old I don't think the oil would be blackish with just 1300 miles on it.
No, it's not. The oil will be black within 20 minutes of running the engine. It's dirty. It's a diesel. That's the way these are.
I have maintained/owned/run a fair number of diesel engines and power plants that are not black at 20 minutes and not even at 50 hours or 2,000 miles. Some that did were old or couldn’t be drained thoroughly and would have much old oil left to dilute the new. I don’t think you can rely on color for a guage.

Even with the excellent suspension qualities of the new HDEOs.

With the 7.3’s, my experience is in line with Tall Timbers. My own 7.3’s and running high quality synthetics with excellent add packages are not black at 1,300 miles. If my new $80,000 PSD had black oil in it that soon, I would want it checked out until I had owned it long enough to have a baseline established.


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post #38 of 51 (permalink) Old 12-25-2018, 08:31 AM
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My oil is black not long after i change it. I have a 15 6.7 with 60,000 miles. It's not a problem. I have talked to the diesel guy at the dealer and he said that was normal. I only use Motorcraft full synthetic oil. Now that you can't use a vehicle health report I am going to see how many miles before the truck tells me it's time for a change. With the computers motoring the oil I just wait for it to tell me when it's time. I used to do it with 10% life left now just have to wait for the truck to let me know.
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post #39 of 51 (permalink) Old 12-25-2018, 10:40 PM
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Diesel oil getting black is to a great degree dependent on how much fuel it is using. The combustion residue left on cylinder walls goes hand in had with the amount of fuel being injected. On every diesel I've owned (16) that was and is the case. I do a change and then only haul some loads in bed and the oil will stay cleaner. Hook up the flatbed and haul 22 round bales per load for 10 trips and the oil will have noticeably blackened in 600 miles. My 2015 does this consistently in its 65K miles.
The oil cooler is not drained when you drain oil so you never get that oil replaced. 7.3 and 6.0 with HEUI have the oil reservoirs for HPOP holding oil that is not replaced with an oil change.

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post #40 of 51 (permalink) Old 12-26-2018, 03:31 AM
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Jimmy,

I would agree with that being a primary factor.


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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
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post #41 of 51 (permalink) Old 12-27-2018, 08:25 AM
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The "change oil soon" message that is generated by the truck will show up at the prescribed interval, about 9,600 miles or 15,600 km. The "change oil required" message shows up about 10,000 miles or 16,000 km.
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post #42 of 51 (permalink) Old 12-28-2018, 08:35 PM
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1st off you can't compare the old 7.3L diesel engines to any of the newer engines. It's didn't have an EGR and you were not recycling exhaust gas back into the engine.

When these 6.7L engines first came out in 2010. A Ford engineer was online discussing the new engine. He commented that they had run beta test trucks and been successful at over 10,000 mile intervals for oil changes. The 2011 trucks carried a 7500 mile change interval and he suggested that was more of safety margin for a new engine until it became a more proven engine.

I ran Blackstone on my 6.0L engines and they consistently ran 6,000 miles intervals. I changed every 5,000. With my 2011 truck, I sent in Oil samples at 5,000, then at 6,000 and at 7,000 and settled on changing my oil per the manual at 7500 miles and ran 150,000 on that truck. Repeated again with my 2015 truck, Oil change every 7500 and the oil samples were always good.

I've been following my Oil Life Change monitor on my 2017 truck and it pop's up usually just under 10,000 miles. My 2017 was one year old yesterday, I had 37,000 miles on it. So I did a lot of highway miles this past year. Daily commute to the school I was building was a little over 100 miles, Pretty much all freeway. So I'm not surprised to see 10,000 mile intervals

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post #43 of 51 (permalink) Old 12-28-2018, 09:44 PM
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Originally Posted by Tall Timbers View Post
On my 1999 and 2000 PSDs, the oil appeared relatively clean when I'd do the changes at 5000 mile intervals. As the trucks aged the oil eventually starting coming out dark, but not in the beginning... I guess I can only speak from my own experience. I've not had one of the 6.7s, but I wouldn't expect the oil to blacken just because it's a diesel... just from my own experience.
Totally different ball game with the late model 6.7L PSDs.
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post #44 of 51 (permalink) Old 12-28-2018, 10:22 PM
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The engine is different but so is the oil!! If you want to know what is going on with the oil/motor do a oil sample!! The only thing constant in life is change!!!
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post #45 of 51 (permalink) Old 12-28-2018, 11:25 PM
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Quote:
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Originally Posted by Tall Timbers View Post
On my 1999 and 2000 PSDs, the oil appeared relatively clean when I'd do the changes at 5000 mile intervals. As the trucks aged the oil eventually starting coming out dark, but not in the beginning... I guess I can only speak from my own experience. I've not had one of the 6.7s, but I wouldn't expect the oil to blacken just because it's a diesel... just from my own experience.
Totally different ball game with the late model 6.7L PSDs.
OK, I believe you guys that the 6.7 is a completely different engine than the 7.3 and it can run very long OCIs.

What I have not seen is an explanation on why the oil apparently turns black so much quicker than other diesels.

If one makes an assumption that the 6.7 can run such long OCIs, then it follows that this engine does not allow much blowby the rings allowing contaminants into the crankcase and which would use up additive packages.

Since the oil is the same for the 6.7 and 7.3 then why is the oil getting dark so quickly in the 6.7 as the OP describes?

Thanks
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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Noco Mod. Michelin Defender LTX 285/75/16.

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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.
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