So today noticed my rear end was going crazy after work mainly when stopped to take off and turned so looked under and noticed my pinion seal was leaking really bad so I doing that wendsday night (oh boy) already got cost on seals and gasket from my job but I was told I takes 6 qurts in the rear is that true can't see till tomorrow so I was just asking if anyone has done that and I'm hoping I don't have internal damage thanks in advance

 

Plus while under there I noticed something wired. There a thing that looks like a pump or a stater I guess you'd say and it's above the spair tire holder not sure on what it is anyone know. 05 f-150 xlt 4.6 4x4

 

That thing under the spare tire is the fuel control module and I've already replaced mine ($103). They go bad frequently but fortunately are easy to replace. The new one comes with shim bolts to hold it off the frame. I guess it's supposed to stop it from rotting (at 45K). We'll see!

 

6 quarts? Nope thats not right.

If you have the larger rear end its 3.5 quarts. The manual list it in pints, thats where the confusion is, i believe it is 6.9 pints in the book.

 

Oh ok thanks and iv got the 10 bolt 8.8 and I kinda laughted when they said 6 so I didn't think that was right

 

The 8.8 is the smaller size which calls for 5.5 pints, so you'll only needs 3 quarts and you'll have just enough left over to wonder what the hell to do with.

Don't forget the 4oz friction modifier if you have a traction lock axle.

 

As far as track lock not sure In know it's posi thought

 

If you do a search there is a thread that tells you how to find out, i don't know myself.
But if you use a premium fluid you won't need it anyway, Mobile 1, Royal Purple. Although some have rear ends that are touchy and still had to add the modifier.

 

Like if I remember I James it up and one spun and other kicked a sec later but on ground both go

 

Well might new spider gears :/