2010 FX4 | XFer | MC Mercon V | 67,000 Miles

[CarbonSteel]

Gang,

Here is the 2nd UOA of the transfer case in my FX4. Ford changed it with Mercon V instead of transfer case fluid (XL-12) at 13.3K miles; not sure why they did that, but the Xfer case does not seem any worse for the wear. XL-12 went back in the case at this OC.

Blackstone comments below and thoughts and comments always welcome:

It doesn't look like the Mercon did any serious damage that we can see. The only metal on the high side is nickel. That's normally just an alloy, mostly in steel parts, so it's hard to call it a problem with the other metals looking so good. That said, it's not really a metal we see track with time on the oil, so we'll see what happens next time. No moisture showed up and insolubles are okay for a transfer case application at 0.3%. The TAN was 1.3 showing little acidity. Aside from the nickel, nice report at 80,300 miles.


Code:
Year: 2010 Make: Ford Model: F-150 FX4

Engine: 5.4L FFV Transmission: 6R80 Axle: 8.8/9.75 ELD Ford (3.73)



Oil Brand/Type: MC MC

Oil Viscosity: Mercon V XL-12

API Service: -- --

Lab: BLKST BLKST



Date: 07/26/2012 02/03/2011

Truck Mileage: 80,300 13,300

Oil Mileage: 67,000 13,300



Aluminum: 16 12

Chromium 1 0

Iron: 139 89

Copper: 24 37

Lead: 0 2

Tin: 0 0

Molybdenum: 0 1

Nickel: 31 12

Manganese: 42 51

Silver: 0 0

Titanium: 0 0

Potassium: 5 8

Boron: 47 21

Silicon: 32 66

Sodium: 7 6

Calcium: 88 126

Magnesium: 79 56

Phosphorus: 153 118

Zinc: 106 18

Barium: 0 2





SUS Viscosity @ 210°F 45.9 45.0

cSt Viscosity @ 100°C 6.01 5.72

Flashpoint in °F 385 380





Fuel % -- --

Antifreeze % -- --

Water % 0.0 0.0

Insolubles % 0.3 0.4

TBN N/A N/A

TAN 1.3 --

 

[dnewton3]

Looks good.

I'd agree that the MercV didn't hurt anything.

I presume the first UOA was of factory fill, and therefore had break-in metals.

This UOA went 6x further, and had a lower per-mile rate for Fe. All the other metals are fine as well.

That rig of yours is doing great overall, and that is a combination of your detailed maintenance committment, and your good long drive cycles. That truck could easily make it 500k miles, if all the equipment wears true to historical data you've collected.