Supertech 15/40 '99 7.3 PSD

[Machinistika]

This is my first UOA.I don't put many miles on an oil change but I do change every 6 months.
3717 miles/6 months on oil
95412 on 7.3 PSD
glycol 0
cu 1
fe 10
cr 2
pb 1
al 2
si 5
sn 0
mo 8
ni 1
mg 196
zn 1170
ca 2368
p 1151
b 5
ba 0
cd 0
mn 0
ag 0
ti 0
v 0
k 1
soot 0
water n
nitration 6
sulphur 18
oxidation 12
visc@100C 12.5
fuel n

UOA was done by a Cat. dealership( Wheeler Machinery)
Everything looked good to me , but I would like some input form you PRO's.
The truck is a '99 F350 used for RV and TOY puller.

 

[MC5W20]

I am no pro. However, this looks great to me.

 

[Steve S]

The visc. dropped?

 

[Machinistika]

Quote:

---

The visc. dropped?

---

I am not to sure how to tell what the viscosity should be in this format. I am used to the API 40 weight. Is this UOA thinner than 40 weight?

 

[-Clayton-]

Viscosity still seems to be within range, Barely. Looks nice regardless.