I am working on a new to me 2000 F150 4x4 with a 4.6 and anautomatic.

I raised the front end to change some hard parts ( tie rods and ball joints ).

After a couple of days I noticed a transmission fluid leek. My first thought was that the rear seal was bad but the tail shaft was dry.

I replaced a couple of quarts of fluid and drove it a fewdays with no leaks at all.

I decided to change out all of the fluids and when I took the fill plug out of the transfer case fluid came gushing out. The manual says that it only takes two quarts.

Any ideas with this issue would be greatly appreciated.

Thanks so much,

Jake

 

put the level at the correct spot on the engine, transmission and transfer case. Drive the truck for 1-2 weeks and monitor if the engine or trans level drops and the transfer case increases. Either it was put in wrong by previous owner, or you have a bad seal between the transmission and transfer case.

 

That is good advice.

I have some Jeeps that the tranny and the transfer caseshare the same fluid.

I found it odd that the transfer case and the transmissioncall for different types of fluid per the <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-comffice:smarttags" /><st1:city w:st="on"><st1lace w:st="on">NAPA</st1lace></st1:city>store.

 

The new MERCON V full synthetic is not suppose to go in transfer cases.... In years past is was common to put the same transmission oil into the transfer case of any vehicle... But that stopped with MERCON V.

 

I found that to also be true with the differentials.

Regular in the front and limited slip in the rear.
Thanks steve(ill)

 

YEP... FORD recommends synthetic 75-140 gear lube in all the rear ends now, but the front can still use the old 80-90 wt lube. Fronts don't get near the usage that the rear does.......... and as you said, the friction modifier is always needed on a limit slip rear end, and don't hurt a non LS unit.

 

So if I am hearing you correctly and have a bad seal between the transmission and the transfer case than the Mercon V could be getting into the transfer case. This can't be good.