what rear diff fluid

2001 greenGT

New Member

Mar 30, 2009

19

0

1

Oct 24, 2009

#1

• Oct 24, 2009

• #1

my 2001 mustang gt is leaking rear diff fluid and i dont know what fluid to use please help

 

BurningRubber

10 Year Member

Dec 6, 2004

1,865

24

58

Oct 25, 2009

#2

• Oct 25, 2009

• #2

If I remember correctly, I used 75w130 or something similar.

You need a friction modifier to add in (some fluids come with it, it will be labeled on bottle) for your limited slip differential.

I'd go fully synthetic.

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

95

134

Oct 26, 2009

#3

• Oct 26, 2009

• #3

2001 is the year they switched IIRC. You either need 80-90 standard gear oil or you need 75-140 synth. Either way you will need the friction modifier. Go to the parts counter they will sell you exactly what you need.

 

bhuff30

Founding Member

Dec 11, 2001

6,037

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129

Olathe KS

Oct 26, 2009

#4

• Oct 26, 2009

• #4

It may be important to figure out what is leaking and why as well. I had a leak at the front seal because it had a bad pinion bearing. It ended up costing me a lot more money because I didn't take the time to figure out WHY it was leaking.