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#2131440 - 01/07/11 10:19 PM 7.3L PSD UOA
sdan27 Offline


Registered: 06/07/09
Posts: 486
Loc: Michigan
This is the first UOA I've done on my truck using Polaris Labs. It came out pretty good as they usually do. In the past, I had some coolant getting into my oil from a leaking water pump dripping on a leaky pan gasket but that seems to be better. The engine has about 420,200 miles and the oil had about 10,300 miles. I used Service Pro 15w-40 with 2 quarts of Hot Shot's Secret which is where the Moly came from. The previous oil change, I used Schaeffer's 7000 with some of their Moly EP additive which is where I think the antimony came from.

Iron 32
Chrome 1
Ni 1
Al 2
Cop 8
Sil 5
Sod 3
Pot 5
Moly 45
Ant 19
Bor 25
Mag 913
Cal 1478
Phos 1031
Zn 1221

Soot <.1%
Water <.1%
Vis100c13.4
TBN 5.83
Ox 13
Nit 18

Even though it runs and starts good, I did a compression test a few weeks ago trying to figure out why my blowby and oil usage both seem high and my numbers were a little low, around 300 psi at each cylinder, so I was a little surprised that the nitration number wasn't higher. I used Delo 10w-30 this oil change because I've read here how well that grade works in HEUI engines and so far seems to be working real well. I used the Delo because we had a couple gallons around so I only needed a little for the oil change. If I use all the Delo up, I may switch to a Kendall 10w-30 I can get for a little less.
_________________________
'94 F250 Powerstroke. LF9691 primary oil. AH1141 air filter. FS1282, FF5320 fuel filter. WF2071 coolant filter.

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#2131481 - 01/07/11 10:50 PM Re: 7.3L PSD UOA [Re: sdan27]
DrDusty86 Offline


Registered: 01/04/11
Posts: 1491
Loc: TX
Yea, the 300psi is low. Has it been worked hard and/or neglected in the past. I have run PSDs on the ranch since I was 13 and worked them REAL hard the 99' DRW 6spd had 331k when we sold it. It had 550psi, just a hint of blow by, but I used Rotella 5w40 after it had about 50k on the clock... Used wix air filters and greased the contact points... It used 1qt per 5k. THAT was a good truck, wish we still had it.. 420k that just breaking in a PSD.. Google Bill Hewitt or powerstroke help if you have questions. I actually called him a few times and he was great, very knowledgable.
Dusty


Edited by DrDusty86 (01/07/11 10:50 PM)

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#2131529 - 01/07/11 11:33 PM Re: 7.3L PSD UOA [Re: sdan27]
chubbs1 Offline


Registered: 06/09/10
Posts: 4574
Loc: Merritt Island FL, USA
are those original miles on the truck? that is an outstanding uoa i'm speechless.
_________________________
'12 Charger SXT
QSUD 5w30 OEM filter

'12 Charger SXT
Edge FST EP 5w30 OEM (Mine;)

'11 Hyundai Sonata GLS
QSUD 5w20 OEM Filter


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#2131555 - 01/08/11 12:02 AM Re: 7.3L PSD UOA [Re: sdan27]
sdan27 Offline


Registered: 06/07/09
Posts: 486
Loc: Michigan
I bought the truck used, with 160,000 miles back in Feb. of 2000. There was a period, somewhere around 300,000 when I had most the leaks fixed, etc. that it hardly used any oil. Since I've had it, I've used quality oil and either Wix/Napa filters or most recently ( last six years maybe ) Fleetguard filters and, other than the small amount of coolant I mentioned, I've always had good UOA results. Maybe its those cold Michigan winters taking their toll.
_________________________
'94 F250 Powerstroke. LF9691 primary oil. AH1141 air filter. FS1282, FF5320 fuel filter. WF2071 coolant filter.

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#2131625 - 01/08/11 04:33 AM Re: 7.3L PSD UOA [Re: sdan27]
dnewton3 Offline



Registered: 05/14/07
Posts: 7001
Loc: Indianapolis, IN
Nice, boring UOA. Just the way you want it.

420k miles and still running. Gotta love that ol' 7.3P SD.
_________________________
Conventionals vs. Synthetics isn't about which is "better"; it's about which lasts longer, while assuring safe operation, in relation to cost. Any product can be over or under utilized. The same applies to filters.
Make an informed decision; first consider your operating conditions, next determine your maintenance plan, and then pick your lube and filter. Don't do it the other way around ...

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#2132340 - 01/08/11 06:51 PM Re: 7.3L PSD UOA [Re: dnewton3]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4346
Loc: Houston, Texas
Do you have a bypass setup on that engine?
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#2133045 - 01/09/11 01:03 PM Re: 7.3L PSD UOA [Re: sdan27]
sdan27 Offline


Registered: 06/07/09
Posts: 486
Loc: Michigan
I used to run a Fleetguard LF777 bypass oil filter but I recently took it off. I also run an LF9691 venturi combo primary filter which has a bypass section built into it that has the same filter media as the LF777 does so I felt the seperate bypass filter was a little unnecessary, not that there's anything wrong with that.


Edited by sdan27 (01/09/11 01:05 PM)
_________________________
'94 F250 Powerstroke. LF9691 primary oil. AH1141 air filter. FS1282, FF5320 fuel filter. WF2071 coolant filter.

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#2133144 - 01/09/11 02:36 PM Re: 7.3L PSD UOA [Re: sdan27]
motor_oil_madman Offline


Registered: 11/29/09
Posts: 4346
Loc: Houston, Texas
It's good to see someone buy a vehicle and then keep it for a long time and maintain it. It really pays off in the long run vs just trading it in every 3 or 4 years. When you take care of things you'll find that you'll avoid many problems down the line.
_________________________
2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.


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#2138945 - 01/15/11 01:31 AM Re: 7.3L PSD UOA [Re: motor_oil_madman]
Johnson615 Offline


Registered: 07/24/10
Posts: 24
Loc: Tn
What about lead or am I blind?

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#2140240 - 01/16/11 11:26 AM Re: 7.3L PSD UOA [Re: sdan27]
sdan27 Offline


Registered: 06/07/09
Posts: 486
Loc: Michigan
Somehow I skipped that one. Lead was 4 ppm.
_________________________
'94 F250 Powerstroke. LF9691 primary oil. AH1141 air filter. FS1282, FF5320 fuel filter. WF2071 coolant filter.

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#2141647 - 01/17/11 05:11 PM Re: 7.3L PSD UOA [Re: dnewton3]
salesrep Offline


Registered: 08/22/03
Posts: 3444
Loc: lllinois
Originally Posted By: dnewton3
Nice, boring UOA. Just the way you want it.

420k miles and still running. Gotta love that ol' 7.3P SD.


+1
_________________________
Cliven Bundy

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