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#4510166 - 09/07/17 04:34 PM 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4
28oz Offline


Registered: 04/20/17
Posts: 337
Loc: Utah, USA
Just thought I'd throw up a UOA of CK-4 on a 200k mile 7.3 PSD. 3,000 mile run, but wanted to get the info up here and get my 5W40 winter fill in. I did about 1,000 miles towing a 27' camper up and down mountains in this run.

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1990 Nissan 300zx - Castrol Edge Euro 0W-40
2004 Nissan Quest - Pennzoil Platinum Euro 0W-40
2003 Ford Excursion 7.3 PSD - Mobil 1 TDT 5w-40

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#4510214 - 09/07/17 05:24 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: 28oz]
bioburner Offline


Registered: 09/19/16
Posts: 1418
Loc: Minnesota
I just dropped the oil this afternoon on my new to me 99 F350 and felt guilty with 4k on the oil but was still very clean but without knowing the oil stock in it and will be putting on 6k on the clock next month wanted to get in some Rotella. 76k on the clock now


Edited by bioburner (09/07/17 05:26 PM)
_________________________

97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass

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#4510255 - 09/07/17 06:08 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: 28oz]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
Its not supposed to be a skin moisturizer. grin
_________________________
Multiple Diesel and Gasoline vehicles

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#4510277 - 09/07/17 06:36 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: 28oz]
bioburner Offline


Registered: 09/19/16
Posts: 1418
Loc: Minnesota
I'm not doing AI on a horse either smile
_________________________

97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass

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#4510306 - 09/07/17 07:02 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: bioburner]
ArcticDriver Offline


Registered: 01/27/17
Posts: 1139
Loc: USA
is the OP going back to M1 TDT ?
_________________________
Multiple Diesel and Gasoline vehicles

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#4510451 - 09/07/17 09:35 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: ArcticDriver]
28oz Offline


Registered: 04/20/17
Posts: 337
Loc: Utah, USA
Originally Posted By: ArcticDriver
is the OP going back to M1 TDT ?


Changing to M1, not going back to it. Usually use Chevron Delo LE 5W40 over the winter. Just used the Mobil 1300 15W40 over the summer because it was cheap. Going to M1 because I got it for $15 a gallon and is 5W40 for the upcoming winter. No particular reason for either brand other than purchase price. I am pleased with the Mobil 1300 performance however. First UOA I've done on this truck and now I have some kind of baseline on how to judge my oil change intervals.
_________________________
-----------------
1990 Nissan 300zx - Castrol Edge Euro 0W-40
2004 Nissan Quest - Pennzoil Platinum Euro 0W-40
2003 Ford Excursion 7.3 PSD - Mobil 1 TDT 5w-40

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#4510664 - 09/08/17 08:36 AM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: 28oz]
dnewton3 Offline



Registered: 05/14/07
Posts: 7389
Loc: Indianapolis, IN
Good UOA; not unexpected on a 7.3L with only 3k miles on the lube.
Typically these engines wear well overall.

With 200k miles on it, it will eventually start leaking oil from various places like the turbo pedestal o-rings, EBPV, oil rail plugs, etc.
But that won't stop it from running!



Edited by dnewton3 (09/08/17 08:36 AM)
_________________________
The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money

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#4544050 - 10/15/17 12:47 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: bioburner]
turbowhistle Offline


Registered: 11/15/09
Posts: 127
Loc: Maryland
Originally Posted By: bioburner
I just dropped the oil this afternoon on my new to me 99 F350 and felt guilty with 4k on the oil but was still very clean but without knowing the oil stock in it and will be putting on 6k on the clock next month wanted to get in some Rotella. 76k on the clock now



I used to have a 2002 F350 4x4 with the 7.3, great motor, ran like a top and was easy to service. I used the MotorCraft 15w40 and the MotorCraft oil filter and purchased both a WM. I changed the oil and filter every 5000 miles while greasing the front end. My oil never looked dirty The good thing about the oil filter was that it was big and easy to get to. I used to punch a small hole into the bottom of the oil filter and let the 2 quarts of oil drain first, making the job much cleaner. Good luck with your 7.3, great motors.

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#4544062 - 10/15/17 01:00 PM Re: 2003 7.3 PSD Mobil Delvac 1300 Super 15W40 CK-4 [Re: 28oz]
4WD Offline


Registered: 09/21/10
Posts: 6366
Loc: Texas
The only M1 5w40 I have used is Formula M … did you get D1?


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