2000 Mercury Mountaineer 5.0L Awd Correct Transfer case fluid???

[Summajet]

I called tow different Ford Parts Dealers and got conflicting information.
One said used motorcraft Mercon V
other dealer said LV

I saw a youtube channel of a master mechanic and he said not to use Mercon V as it will mess up the transfer case??
I know it is 1.3 oz of fluid.
I have drained the transfer case and tonight I want to add correct fluid...

 

[C420sailor]

Mercon. Not V, not LV.

Mercon V in the transmission and PS, regular Mercon in the transfer case.

LV is ‘low viscosity’ and was created in the late aughts.

I have a handful of Motorcraft Mercon V quarts, and they say ‘do not use in transfer cases’ plain as day on the back label. A quick google reveals that Mercon V has killed at least a few transfer cases.

 

[Okie2]

You'll find it labeled "Dex/Merc". I believe it will take a bit over a quart, fill it until it begins to flow back out the fill plug hole

 

[Turdle]

Old ford page stating lv not for use in transfer cases. "Use xl12"



Ford discontinues xl12, changes "spec" and now suggests lv.

from this site

1 quart Ford Motorcraft® XL-12 Transfer Case Fluid

This is a confusing subject to say the least. I'd use amsoil merc3

 

[96eb96]

No Mercon V. I'm surprised a dealer don't know that.