Gear oil?

[GTFTW]

Hey guys sorry for the noobish question.....

im about to get some gears installed and i need to know what oil to use with them. i checked AM and the oils they list for the 99-04 8.8's specify that they're for 05+ mustangs only. is this a typo or does it not matter?

thanks

 

[txredgt]

Hey guys sorry for the noobish question.....

im about to get some gears installed and i need to know what oil to use with them. i checked AM and the oils they list for the 99-04 8.8's specify that they're for 05+ mustangs only. is this a typo or does it not matter?

thanks

Its all about the weight of the oil and I don't have that knowledge off hand. Either way go with amsoil

 

[GDawg]

For a '99, XY80W-90-QL and if you have traction loc and drain it all the way you need to add 2oz of friction modifier.

 

[Kilgore Trout]

2001 and newer get 75-140 synth there is a tag on the diff look at it.

 

[BurningRubber]

I used Mobil 1 Synthetic 75w140 with a bottle of Ford friction modifier.

 

[ItsStock02]

I used Mobil 1 synthetic 75w90 when I had my gears changed and everything has been fine so far. Its been close to two years too.

 

[Sonic04GT]

Not sure about weight for your car but I used Royal Purple and haven't had any issues in about a year.

 

[GTFTW]

I really appreciate the input guys. i have one more question, how much do i need? 1 or 2 quarts?

 

[Sonic04GT]

I really appreciate the input guys. i have one more question, how much do i need? 1 or 2 quarts?

I used a little over 2 I believe.

 

[N8Dogg98]

I believe it's 3.8 pints, which is just under 2 quarts (2 bottles).

 

[Jinx]

So for an '03 would it be the regular oil with added friction modifier or would it be synthetic oil with no added friction modifier?

EDIT: did more searching.... 75W-140 (XY-75W140-QL) + 4oz. of friction modifier (XL-3) it is.