XL-12 Motorcraft fluid was replaced.

Is the Valvoline spec going to be the same as pouring in the old old version of t-case oil?

Can't you just order LV from the internet just the same as you have ordered Valvoline?

I think you said your parts counter didn't have LV in stock?

 

From what I've read I got the impression that XL-12 = Low Viscosity equivalent, maybe someone could comment. I would suspect that its probably the same as the old TC oil I was expecting to get from Ford. I think while I was at the parts counter I was expecting to get the Motocraft TC oil bottle, and was thrown for a loop when he just gave me Merc V, knowing I would eventually do a pan drop and filter change on the transmission anyway I took it and left, I didn't think to ask about Merc LV at the time, and it appears to be even harder to order from Ontario than the Valvoline was.

 

Well "I" wouldn't, but because I wouldn't go to the dealer for something like that around where I live. I do my own research and come to my own conclusions for most things, thats one of the reasons I'm on this forum to learn from the experience of others and to share my opinion for some things.

I retract my statement to the OP don't use just whatever someone hands you, do feel free to research and use your head to do whatever feels appropriate though.
I will say I generally stick to the recommended specs, but when ford changes their recommendations every few years and sometimes contradicts themselves I take their specs with a grain of salt.

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i don’t know if this is directly relevant to this transfer case discussion, but:

was just researching fluid for manually tranny in a different truck and came across a similar back and forth discussion Thant included Mercon v vs Mercon. It reminded me of your post. Here is snip from other discussion:





#8

ford390gashog , 01-20-2006 10:37 PM
Post Fiend
Quote:
Originally Posted by aurgathor
For a manual tranny, there should be no difference between Mercon and Mercon V.

actually there is a big difference. the mercon V does not have the anti wear additives needed for yellow metals
Reply

 

FYI, On my 2015 Fx4, there is a label ON the transfer case that states "Fill with Mercon LV only". Sorry, not sure how to reduce size of pic.