2015 Ford F250 PSD - Delo 5W40 synthetic

[Donald]

Here is another UOA for my 2015 F250 PSD. Engine has a bypass filter and the full flow has been changed every 8000 miles. Oil was not changed after this UOA.

I think the only concerning thing is fuel in the oil. This was a UOA in the winter in NY.

Code


oil Delo Delo T6 T6 T6 Motorcraft

mileage 108231 89588 64385 56820 48937 411600

mileage on oil 18643 15460 7565 7883 7777 7480



Metals

Fe 29 27 11 14 17 15

Cr 1 1
Pb
Cu 3 3 2 2 3 2

Sn
Al 8 6 2 5 7 8

Ni
Ag
Ti
V


Contaminants

Si 11 10 9 6 7 8

Na 6 13 4 9 9 7

K
Water%
Coolant no no no no no no



Additives

Mg 976 1109 1090 1166 944 21

Ca 787 791 889 915 996 2155

Ba <
P 876 879 1102 1141 1034 892

Zn 1151 1163 1375 1305 1189 985

Mo 55 61 67 65 57 5

B 25 17 38 42 45 42



Physical tests

Vis (cSt 100C) 12.0 13.1 12.6 11.5 12.6 10.0

Fuel % 2
Soot % 0.9 0.5 0.1 0.2 0.9 0.3



Physical/Chemical

TBN 5.5 5.9 7.1 8.1 7.5 5.9

 

[CarbonSteel]

Meh; until you hit 4% Fuel Dilution, I would not raise even an eyebrow. Each of these PSD engines has its own habit related to fuel dilution. Mine would hit 4 or 5% with a <7K OCI and no bypass. You are still in good shape at 2%.

 

[tundraotto]

Looks good to go even further!

 

[claluja]

Was gas chromatography used to measure fuel?

 

[mattd]

I'd be curious as to the iron level without the bypass. Otherwise, looks good. I wouldn't worry about the 2% fuel. While of course it's unwanted, but it's not at a dangerous level at 2%

 

[CarbonSteel]

Originally Posted by claluja
Was gas chromatography used to measure fuel?

Yes; that would be important, I meant to ask that myself. If that is a Blackstone UOA and unless something has changed they do not use gas chromatography and thus not as accurate.

 

[claluja]

Originally Posted by 2015_PSD
Originally Posted by claluja
Was gas chromatography used to measure fuel?

Yes; that would be important, I meant to ask that myself. If that is a Blackstone UOA and unless something has changed they do not use gas chromatography and thus not as accurate.


Yep. Doesn't the viscosity suggest fuel much higher than 2%?

 

[Donald]

Originally Posted by claluja
Was gas chromatography used to measure fuel?


This was a NAPA UOA. I asked.

 

[Donald]

I am thinking one more click of the OLM. So a total of 24K to 25K miles. Then I will change oil and full flow filter.

 

[CarbonSteel]

Originally Posted by claluja
Originally Posted by 2015_PSD
Originally Posted by claluja
Was gas chromatography used to measure fuel?
Yes; that would be important, I meant to ask that myself. If that is a Blackstone UOA and unless something has changed they do not use gas chromatography and thus not as accurate.
Yep. Doesn't the viscosity suggest fuel much higher than 2%?
Assuming that it is Delo 400 XSP CK-4 5W-40 (https://cglapps.chevron.com/msdspds/PDSDetailPage.aspx?docDataId=493727&docFormat=PDF); yes, it does since the virgin viscosity is listed as 15.4 and this test indicates 12.0. In addition, my PSD did not fare well in the fuel dilution department in colder weather so I would be surprised if Donald's is only producing 2% during an NYK winter.

 

[CarbonSteel]

Originally Posted by Donald
Originally Posted by claluja
Was gas chromatography used to measure fuel?
This was a NAPA UOA. I asked.
It looks like ALS does use gas chromatography to test fuel dilution (https://alsglobal.blog/en/fuel-dilution/) though if the initial viscosity was 15.4 and is now 12.0, it would seem that something is impacting the viscosity.

 

[Donald]

Originally Posted by 2015_PSD
Originally Posted by claluja
Originally Posted by 2015_PSD
Originally Posted by claluja
Was gas chromatography used to measure fuel?
Yes; that would be important, I meant to ask that myself. If that is a Blackstone UOA and unless something has changed they do not use gas chromatography and thus not as accurate.
Yep. Doesn't the viscosity suggest fuel much higher than 2%?
Assuming that it is Delo 400 XSP CK-4 5W-40 (https://cglapps.chevron.com/msdspds/PDSDetailPage.aspx?docDataId=493727&docFormat=PDF); yes, it does since the virgin viscosity is listed as 15.4 and this test indicates 12.0. In addition, my PSD did not fare well in the fuel dilution department in colder weather so I would be surprised if Donald's is only producing 2% during an NYK winter.


The oil is Delo 400 LE 5W40 synthetic CJ-4. I still have some CJ-4 left. I do not believe the Delo oil that is similar but CK-4 is Ford PSD approved.

 

[mattd]

With the viscosity this low now i would be Leary of stretching it out that far. JMO

 

[CarbonSteel]

Originally Posted by Donald
The oil is Delo 400 LE 5W40 synthetic CJ-4. I still have some CJ-4 left. I do not believe the Delo oil that is similar but CK-4 is Ford PSD approved.
The virgin viscosity for that oil is 14.6 (https://cglapps.chevron.com/msdspds/PDSDetailPage.aspx?docDataId=545378&docFormat=PDF) so it still dropped some.

 

[Donald]

Remember the PSD can run on 10W30 or 5W40 oils. So an oil a little thinner than a 5W40 should not be a problem.

 

[claluja]

Originally Posted by Donald
Remember the PSD can run on 10W30 or 5W40 oils. So an oil a little thinner than a 5W40 should not be a problem.


Yes, but you may have 6-10% fuel in your oil . . . ?

 

[Donald]

Originally Posted by claluja
Originally Posted by Donald
Remember the PSD can run on 10W30 or 5W40 oils. So an oil a little thinner than a 5W40 should not be a problem.


Yes, but you may have 6-10% fuel in your oil . . . ?


So if ALS (NAPA) uses gas chromatography that means the fuel dilution is pretty accurate at 2%. I am only planning on going another 6K or 7K miles and then change the oil.

 

[claluja]

Originally Posted by Donald
Originally Posted by claluja
Originally Posted by Donald
Remember the PSD can run on 10W30 or 5W40 oils. So an oil a little thinner than a 5W40 should not be a problem.


Yes, but you may have 6-10% fuel in your oil . . . ?


So if ALS (NAPA) uses gas chromatography that means the fuel dilution is pretty accurate at 2%. I am only planning on going another 6K or 7K miles and then change the oil.


Doubt they actually used it. Polaris "uses" GC too - but not for every analysis.

 

[CarbonSteel]

@Donald - given the fuel dilution issues that PSD engines have and from my own experience with dilution in general and especially during colder weather in Houston, you are going to want to be sure that you do not have >5% fuel in your oil before extending. The viscosity is not down too much, but I would want to know for sure. I would contact the lab and confirm that GC was used on the fuel dilution test.

 

[racin4ds]

I'[d be going back to T6 if it were me, looks like things went downhill when you went to the Delo IMO....