ALL Ford transfer cases OKed for Dex/Merc LV

[Kira]

Somewhere a fellow posted this claim with an image from a video to which there was no link.

Anybody know anything about this? I want to change my fluids and will put LV in the TC if it's OK.


Also, I was confused about the trannie fluid but I now see MERCON V is all that's going in my 2005's 5R55E.

 

[bdcardinal]

Ford Chemicals Page

MERCON® LV Automatic Transmission Fluid



Motorcraft® MERCON® LV is a premium-quality automatic transmission fluid recommended by Ford Motor Company for use in Ford, Lincoln and Mercury vehicles that require MERCON® LV type fluid. This product also provides excellent performance in electronically controlled automatic transmissions. Check Owner Guide and transmission fluid charts for application
Motorcraft® MERCON® LV is manufactured with high-viscosity index, premium-quality, hydroprocessed base oils and specially designed performance additives, which provide excellent shifting characteristics at high and low ambient temperatures and guards against transmission shudder. This fluid has excellent thermal, oxidation and shear stability and good low temperature fluidity. It provides wear protection and inhibits the formation of gum, sludge, lacquer and foam. It also prevents against rust and corrosion. It is dyed red for ease of leak detection
For use in all transfer cases
For use in power steering systems built after 2012
Do not use in applications where MERCON® ULV, MERCON® V, MERCON® SP (exceptTorqShift®), Continuously Variable Chain Type Transmission Fluid, Motorcraft® Premium Automatic Transmission Fluid, FNR5 Automatic Transmission Fluid or Type F Automatic Transmission Fluid is recommended, or in power take-off units
Refer to the Motorcraft® MERCON® LV product data sheet at the link below for additional information. For SDS information call 1-800-448-2063
Note: MERCON® LV Automatic Transmission Fluid is available in bulk quantities at substantial savings. Use of bulk oil products is environmentally proactive. Contact your FCSD Aftermarket Sales Manager, an approved Motorcraft® Bulk Oil Distributor, or www.Motorcraft.com for details.

 

[01rangerxl]

Dex/Merc LV? That sounds like Maxlife, which should be fine in a Ranger transfer case. I don't know about Mercon LV in the t-case though...not sure it covers a range of specs like universal fluids do. The Ford document above does say "all" though...

Ranger t-cases just need any Dex/Merc type ATF. Original spec is Mercon.

Yes, you should use Mercon V in a 5R transmission. Maxlife and other universal synthetics are fine too. I would not use a conventional Dex/Merc, but have used many synthetic universal fluids without issue. 232K on my 02 5R44E, 1 filter change, 0 problems thanks to good universal synthetics.

 

[BlakeB]

Originally Posted by Kira
Somewhere a fellow posted this claim with an image from a video to which there was no link.

Anybody know anything about this? I want to change my fluids and will put LV in the TC if it's OK.


Also, I was confused about the trannie fluid but I now see MERCON V is all that's going in my 2005's 5R55E.



Go back and look again, I posted a link.

 

[BlakeB]

Originally Posted by BlakeB
Originally Posted by Kira
To BlakeB: Could you provide the website where this video appeared?

My New To Me '05 Ranger with 48K needs fluids changed.

I have a motor switched transfer case so I'll use the LV.

Just trying to decide which synthetic ATF to use. I'm considering older formula Valvoline DexIII/Merc as it's good for my year transmission which was scheduled for MERCON.


https://youtu.be/Sd-0tit_ZAI

 

[Donald]

I do not think transfer cases are very picky about which exact ATF is used. I have Amsoil ATF in my Ford pickup transfer case and Amsoil fuel efficient ATF in the transmission. Mainly I have leftover Amsoil ATF and its fine for the transfer case.

 

[SwampSurvivor]

As long as there's no sort of clutch packs in it (full time / AWD), they won't care what's in them as long as it's light weight and NOT gear oil.

 

[Kira]

Thanks to you all for answering.

Now I just have to locate the "slip yoke" which, I assume, is on one end of the main driveshaft.
I've read it needs to be lubed (greased with silicone grease OK?)

 

[SwampSurvivor]

Is the slip yoke clunking?

 

[bdcardinal]

9L3Z-4W602-A is the p/n for the Ford kit for slip yoke noise.

 

[Kira]

Yes, I believe it is clunking. I described the noise to someone who guessed it was the slip yoke. Where is the slip yoke located? I don't have a book yet. All help appreciated.

Thanks bdcardinal for the p/n. I need to see the darn thing before ordering the kit. Any special tools required?

Just yesterday I located my PCV valve. Given the seniority of the 4.0L V-6, there have been many revisions. It's the "oddest" PCV valve you've ever seen and doesn't resemble any shown on any DIY video.

Mine goes into the VC as you'd expect but also has 2 hoses connected to it. In the RockAuto catalog it looks like a 1/4" bar of aluminum is wrapped around a normal PCV valve.

 

[01rangerxl]

That's a heated PCV valve, coolant runs through the small hoses.

Here is a slip yoke write up...
https://www.ranger-forums.com/drivetrain-tech-37/slip-yoke-possible-sticky-73528/

I think the Ford approved procedure involves actually removing the driveshaft to properly grease it and clamp the boot. The above write up is just loosening the boot with the driveshaft in place, then securing it with zip ties.

The Ford kit bdcardinal posted above contains a pack of the correct grease and a replacement boot clamp.

I probably should do this on my Explorer, but its thump is very intermittent and doesn't bother me much.

 

[bdcardinal]

PTFE Lubricant This also works on slip yokes.

 

[stanlee]

Use Mercon LV (do not use Dex/Merc LV) which supercedes XL-12 or use Valvoline transfer case fluid (what I use and is a suitable XL-12 replacement). Supposedly Ford transfer cases are picky enough that Mercon V will grenade them, which Ford found out and changed the recommendation....after a bunch grenaded.
As for clunking Ford transfer cases can and do make all kinds of clunking on acceleration and deceleration when the fluid is old or low. I had clunking that for the life of me couldn't figure out. It was only because of scheduled maintenance (bought the truck used without maintenance hx) I decided to change the transfer case fluid, which was black instead of red, that I found out THAT was the issue. That was almost two years/40k miles ago and went from clunking on every drive to ZERO clunking ever with just the transfer case fluid change.