Transfer case fluid???

spotman · #1 (**permalink**) 10-31-2009, 08:54 PM

What are ya'll putting in you transfer cases? I cannot find straight Mercon and I have heard not to use mer v. So what should I use

? Is the Dex/mercon combo safe? Thank for any info..

spotman · #2 (**permalink**) 10-31-2009, 10:12 PM

Sorry, 1998 expy transfer case

97ExpGuy · #3 (**permalink**) 11-01-2009, 01:39 AM

I used Mercon V with no problems.

http://www.ford-trucks.com/forums/88...id-change.html

Big Greenie · #4 (**permalink**) 11-01-2009, 09:12 AM

I also recently filled mine with Mercon V. The TOD feature worked very smoothly yesterday. It was a rougher engagement before the change.

Where did you hear not to use V?

ford12508 · #5 (**permalink**) 11-01-2009, 10:08 AM

On the bottle it of Merc V it says don't use in transfer cases, but that is what I use and what all the dealers around here use. Mercon III isnt made anymore, so they use Mercon V

spotman · #6 (**permalink**) 11-01-2009, 07:34 PM

Thanks for the info!!

04markIII · #7 (**permalink**) 11-02-2009, 10:26 AM

i just had mine changed. used royal purple.

dirtmonkey11 · #8 (**permalink**) 11-02-2009, 11:06 AM

Look at the parts store for mobil synthetic transmission fluid, it covers all mercon's. I used that in my truck and it worked great.

Ford554 · #9 (**permalink**) 11-02-2009, 01:25 PM

Any quality brand A.T.F. will work fine..Dexron III, Mercon, Mercon V, etc. No need for synthetic in your t.case. It won't hurt it but it's kind of overkill.