2017 Ford F53 6.8V-10-Kendall GT-1 5W30 4478 miles

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This is the fourth oil change since new, It's a little early but it was taken before a 2000 mile trip.
Code


Miles on lube 1113 4883 5226 4478

Miles on Unit 1113 5996 11222 15700

Fe 34 21 14 14

Ch 0 0 0 0

Ni 1 0 0 0

Al 7 4 4 4

Cu 22 7 3 2

Pb 0 0 0 0

Sn 0 0 0 0

Cd 0 0 0 0

Ag 0 0 0 0

V 0 0 0 0

Si 88 46 24 21

Na 10 5 4 3

K 8 3 2 2

Ti 0 85 93 95

Mo 85 24 17 17

Sb 0 0 0 0

Mn 4 1 0 0

Li 0 0 0 0

B 211 79 64 78

Mg 15 12 11 9

Ca 2068 2161 2134 2175

Ba 3 0 0 0

P 757 679 680 666

Zn 760 797 840 770

Fuel dilution 2.3 2.8 2.6 1.8

Soot
Water
Vis, 100C cSt 7.4 8.6 8.9 9.1






The fuel dilution has come down this change. As an experiment, I minimized the use of the transmission "tow/haul" mode. My theory was that high rpm closed throttle events might be a possible source of the high fuel dilution. I only used t/h to descend steep grades. Time will tell if there's any merit to the theory.
Otherwise, everything seems to be wearing as I would expect.
 
Originally Posted by Joshua_Skinner
Looks good. I'm assuming the vehicle is an F350 rather than F53? What lube are you using?


My understanding is the F53 is the cab chassis used to build box trucks and motorhomes on.
 
I would imagine she works hard and the numbers seem good for being new.
 
Originally Posted by Joshua_Skinner
Looks good. I'm assuming the vehicle is an F350 rather than F53? What lube are you using?

Nope, F53. It's a motor home chassis. The equivalent would be a F550. Commercial stripped chassis is referred to as F59.
 
I think most vehicles shut off the injectors completely with the throttle closed and above a minimum speed. No fuel to dilute. My F150 will show 99mpg during engine braking at highway speeds downhill.

Originally Posted by AITG

This is the fourth oil change since new, It's a little early but it was taken before a 2000 mile trip.


The fuel dilution has come down this change. As an experiment, I minimized the use of the transmission "tow/haul" mode. My theory was that high rpm closed throttle events might be a possible source of the high fuel dilution. I only used t/h to descend steep grades. Time will tell if there's any merit to the theory.
Otherwise, everything seems to be wearing as I would expect.
 
Originally Posted by tcp71
I think most vehicles shut off the injectors completely with the throttle closed and above a minimum speed. No fuel to dilute.


Yes, Ford has been doing this for over well 20 years.

IIRC.... I think it is over 2000 rpm with the throttle closed. You can hear when the injectors start firing again very easily on a manual trans vehicle
 
Originally Posted by Linctex
Originally Posted by tcp71
I think most vehicles shut off the injectors completely with the throttle closed and above a minimum speed. No fuel to dilute.


Yes, Ford has been doing this for over well 20 years.

IIRC.... I think it is over 2000 rpm with the throttle closed. You can hear when the injectors start firing again very easily on a manual trans vehicle

Yup, that's how it's supposed to work. However, all of the fuel trim numbers look good so I'm looking for something that isn't exactly right. It runs like a watch and has excellent power so I don't see a need to dig into it further. I will continue to take oil samples and see where it goes.
 
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