Changing Rear End Cover...Advice

[95strokerPSU]

I'm going to drain my rear and put a MAC girdle on my car tomorrow. What fluid should I use and how much do I need. I heard about 2 quarts or until it's full, but how can you tell if it's full? when it comes out the of the fill hole? I also read something about a friction modifier. Do I need some of that too. Any help would be appreciated.

 

[RIO5.0]

Yes.... 2 qts and the 4 oz of the friction modifier....Get the modifier in with the first qt....fill til it weeps out the hole..

I use Ford dif lube myself...

 

[95strokerPSU]

How important is the friction modifier? I went down to my speed shop and they recommended just 80w90 and said nothing about a modifier. Will I be okay without it?

 

[RIO5.0]

Ford recommends this stuff...Personally I run it and 99% do...It helps the clutches in the dif grab "friction modifier" its 4.00 a wack...I would say your tech doesn't know fords to well...

 

[wytstang]

I run it in mine as well it's good stuff. When I worked at ford we put it in every heavy duty truck/sports car (<aka mustang gt)

 

[89MustangGX]

You will probably need more than 2 quarts of fluid. I recall even stock taking more than that -- but the new cover will increase capacity some as well.

 

[wytstang]

Stock spec calls for 3.75 qts.

 

[mo_dingo]

Yep, just get a hand pump that fits on the bottle, and keep pumping until it starts to overflow.

Definately get the friction modifier. I know for a fact that auto zone sells it as well.
Scott

 

[mo_dingo]

Yep, just get a hand pump that fits on the bottle, and keep pumping until it starts to overflow.

Definately get the friction modifier. I know for a fact that auto zone sells it as well.
Scott

 

[hillie16]

If you don't add the friction modifier, you will regret it, it DOES make a difference, I learned that one the hard way.

 

[95strokerPSU]

Got the friction modifier in there. With the girdle, it took almost 6 quarts to fill it till it came out the fill hole. Thanks for your replies.

 

[mackey]

6 Quarts!!! it only took me 2!

 

[RIO5.0]

6 Qts...and I said 2..DUHHH...Thats real close.......
I forgot that stuff comes in the tall squeeze bottles...

Hillie....Whats up with the mondo avatar.... The benefits of management...

 

[89MustangGX]

Got the friction modifier in there. With the girdle, it took almost 6 quarts to fill it till it came out the fill hole. Thanks for your replies.

6 quarts!

The different ones I have used are still right around 3, but they get real close to needing a little more depending on how much of each bottle you get in there. I have used FRPP (T/A) and Strange.

 

[cmozez]

Holy crap, 6 quarts!!!! Are you sure you didn't fill it from the vent on top

 

[hillie16]

Hillie....Whats up with the mondo avatar.... The benefits of management...

Yeah, I'm progressing through the grieving process though, LOL I need to go back to a smaller size.