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what fluid for my tranny and rear diff ?

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Old Apr 7, 2008 | 12:21 PM
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red92firebird's Avatar
red92firebird
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From: Madison, MS
Car: 1998 Mustang GT
Engine: 4.6L
Transmission: T-45
what fluid for my tranny and rear diff ?
Hi I just wonder what tranny and rear fluid for my 1992 pontiac firebird automatic, what brand is good and do i need rear addic bottle for my rear ? btw what tranny do i have and rear do i have ? thanks
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Old Apr 8, 2008 | 04:59 PM
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red92firebird
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From: Madison, MS
Car: 1998 Mustang GT
Engine: 4.6L
Transmission: T-45
Re: wat fluid for my tranny and rear diff ?
No one ?
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Old Apr 8, 2008 | 05:58 PM
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midwest
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Re: wat fluid for my tranny and rear diff ?
dextron 3 or higher for the trans. Its a 700r4

gl4 or gl5 80w-90 for the diff.
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Old Apr 8, 2008 | 06:36 PM
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red92firebird
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From: Madison, MS
Car: 1998 Mustang GT
Engine: 4.6L
Transmission: T-45
Re: wat fluid for my tranny and rear diff ?
I have 700r4 ?? wow, and do I need friction modi for my rear from the dealer ? thanks
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Old Apr 8, 2008 | 07:19 PM
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midwest
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Re: wat fluid for my tranny and rear diff ?
You only have to use an additive if you have a posi. It doesnt have to be gm posi additive. It can be from a parts store.
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Old Apr 8, 2008 | 11:11 PM
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red92firebird
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From: Madison, MS
Car: 1998 Mustang GT
Engine: 4.6L
Transmission: T-45
Re: wat fluid for my tranny and rear diff ?
I just want to make sure that I have 700r4, because im doing 305 v8 carb swap in a few week.





thanks
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Old Apr 9, 2008 | 11:13 PM
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rockin rs
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Re: wat fluid for my tranny and rear diff ?
That gear shiter linkage looks like a straight shot for a 700r4. If it's stock, that's most definitely what you've got.
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Old Apr 9, 2008 | 11:18 PM
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red92firebird
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From: Madison, MS
Car: 1998 Mustang GT
Engine: 4.6L
Transmission: T-45
Re: what fluid for my tranny and rear diff ?
Thanks , now I can confident about swap a 305 or 350
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