2015 F250 diesel, Delo 400 LE, 15460 miles

[Donald]

This UOA was for two OLM cycles. The full flow filter changed with each cycle and makeup oil added to fill the new filter. Engine also has Amsoil bypass filter that is changed every other oil change (so 4 OLM cycles). Oil was Delo 400 LE 5W40 synthetic. Full flow filter is Motorcraft.

I am thinking I could go three OLM cycles rather than two.

Code




oil Delo T6 T6 T6 Motorcraft

mileage 89588 64385 56820 48937 41160

mileage on oil 15460 7565 7883 7777 7480



Metals

Fe 27 11 14 17 15

Cr 1
Pb
Cu 3 2 2 3 2

Sn
Al 6 2 5 7 8

Ni
Ag
Ti
V


Contaminants

Si 10 9 6 7 8

Na 13 4 9 9 7

K 6
Water%
Coolant no no no no no



Additives

Mg 1109 1090 1166 944 21

Ca 791 889 915 996 2155

Ba
P 879 1102 1141 1034 892

Zn 1163 1375 1305 1189 985

Mo 61 67 65 57 5

B 17 38 42 45 42



Physical tests

Vis (cSt 100C) 13.1 12.6 11.5 12.6 10.0

Fuel %
Soot % 0.05 0.1 0.2 0.9 0.3



Physical/Chemical

TBN 5.9 7.1 8.1 7.5 5.9

 

[dnewton3]

Originally Posted by Donald
...I am thinking I could go three OLM cycles rather than two.

Nope; you're wrong.

Probably could go about five; maybe more.
The Fe wear is steady at 2ppm/1k mi. All other metals at paltry insignificance.
Contamination low on all counts; soot, fuel, Si, etc all good.

You should OCI only when the UOA data shows wear rates are escalating outside normal trending.

I recommend you UOA every IOLM cycle; continue to use until logical condemnation limits are exceeded (IOW - not the typical BITOG overzealous anal-retentive uninformed panic points ....)

 

[Donald]

The Amsoil bypass filter was installed at 56820 for reference. (As in that is when I first went to a bypass filter in addition to full flow filter).

 

[SubieRubyRoo]

What's the virgin viscosity? The only thing I would verify before you do that is verify since if viscosity is thickening up above virgin, this is likely your limit if you don't want nasty stuff going on inside. The Ca and P numbers are quite a bit lower as well... that may or may have any bearing on how your engine is wearing. One question though... it sure looks like if you extrapolate your T6 runs out to the distance run on this UOA I think everything would look similar... yet there are better numbers on Aluminum and Iron with the RT6, plus the additional TBN and B can only help.

 

[Donald]

Originally Posted by SubieRubyRoo
What's the virgin viscosity? The only thing I would verify before you do that is verify since if viscosity is thickening up above virgin, this is likely your limit if you don't want nasty stuff going on inside. The Ca and P numbers are quite a bit lower as well... that may or may have any bearing on how your engine is wearing. One question though... it sure looks like if you extrapolate your T6 runs out to the distance run on this UOA I think everything would look similar... yet there are better numbers on Aluminum and Iron with the RT6, plus the additional TBN and B can only help.


This is a point in time issue. When T6 went to a CK-4 I purchased all the CJ-4 containers of T6 I could find at Walmart (not too many). The initial T6 CK-4 did not meet the Ford spec. Sensing a shortage of oil, I went out and bought some Delo 400 LE CJ-4 to hold me until the CK-4 5W40 synthetic oils would meet the Ford spec. I have one or two oil changes left of Delo 400 LE. I believe now the T6 CK-4 5W40 meets the Ford spec so future oil purchases will be that oil.

 

[Schmoe]

Dang that's NICE...I put that in my 4 cylinder Mercruiser gasser and change it out once every 3 years....stored inside and maybe put about 10 hours a year on it. This year, I didn't even get a chance to take it out. Glad I got that stuff sitting in the crankcase.

 

[claluja]

Looks great.

Stock or deleted?

Lab?

 

[Donald]

Originally Posted by claluja
Looks great.

Stock or deleted?

Lab?


It is stock.

NAPA lab.

 

[racin4ds]

That T6 certainly looks way better on paper than the Delo... Look at that P and Zn!

 

[tundraotto]

Originally Posted by racin4ds
That T6 certainly looks way better on paper than the Delo... Look at that P and Zn!


The Delo has 2 times the miles on the sample compared to the T6......I dont know if T6 would look any better with the same OCI, maybe worse.....

 

[spiderbypass]

This oil analysis is excellent overall and shows the usefulness of bypass filtering especially and only because it has the stock emissions with no deletions.