rear diff whinning ?

Killa

Active Member

Jul 9, 2007

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Dec 2, 2007

#1

• Dec 2, 2007

• #1

yes its whinning on first miles of cold weather, after a miles or half its stop whinning, I use 70w/90 RP, is this normal ?

 

COramprat

...I can take it. I think.

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Mar 2, 2003

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Sea of Tranquility

Dec 3, 2007

#2

• Dec 3, 2007

• #2

How cold? I've never heard mine whine at all but you may want to check your fluid level just to make sure.

 

Killa

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Jul 9, 2007

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Dec 3, 2007

#3

• Dec 3, 2007

• #3

COramprat said:

How cold? I've never heard mine whine at all but you may want to check your fluid level just to make sure.

Click to expand...

fluid is full.

 

Spro

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Nov 3, 2007

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Dec 3, 2007

#4

• Dec 3, 2007

• #4

You may have a bearing going bad.

 

SVT32VDOHC

waiting for the next hack atta

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Motor City

Dec 3, 2007

#5

• Dec 3, 2007

• #5

Well, first of all, the factoy spec fluid is 80W90. Secondly, did you put in 4oz. of friction modifier?? For trac loc axles need this. Try that first....if it doesn't help, I vote for bearings as well. Bearings are cheap, labor is double.

 

281CI96Coupe

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Dec 3, 2007

#6

• Dec 3, 2007

• #6

Where can you buy a bearing kit, because i have bearing problem in my rear too..

 

Killa

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Jul 9, 2007

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Dec 3, 2007

#7

• Dec 3, 2007

• #7

I use Royal Purple. If I want switch to regular fluid , what should I use ?

 

SVT32VDOHC

waiting for the next hack atta

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Motor City

Dec 3, 2007

#8

• Dec 3, 2007

• #8

I just use Valvoline 80W90. No need for synthetic. Bearing kits can be purchased from www.50resto.com I am sure. See I just take my car to my rear end shop and they just do it up when I have a problem.

 

Killa

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Jul 9, 2007

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Dec 3, 2007

#9

• Dec 3, 2007

• #9

SVT32VDOHC said:

I just use Valvoline 80W90. No need for synthetic. Bearing kits can be purchased from www.50resto.com I am sure. See I just take my car to my rear end shop and they just do it up when I have a problem.

Click to expand...

I look at the manual , saying I should use 80w/140 or something like that. I bought RP from americanmuscle.com and 80w/90 is only weight they carry. when did ford change the fluid spec ?

 

CobraRed_96_GT

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May 20, 2006

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Dec 3, 2007

#10

• Dec 3, 2007

• #10

KillaGT said:

I look at the manual , saying I should use 80w/140 or something like that. I bought RP from americanmuscle.com and 80w/90 is only weight they carry. when did ford change the fluid spec ?

Click to expand...

RP sux, i swear to god - every test i've ever seen of their stuff finishes in the bottom 2-3
(oh, and i'm using it too )

 

Killa

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Dec 3, 2007

#11

• Dec 3, 2007

• #11

CobraRed_96_GT said:

RP sux, i swear to god - every test i've ever seen of their stuff finishes in the bottom 2-3
(oh, and i'm using it too )

Click to expand...

I beleive that now that im using it, and I like regular oil then synstec oil now too. What good brand for tranny and rear diff ? for my 1998 mustang. thanks

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Dec 4, 2007

#12

• Dec 4, 2007

• #12

Hold cold we talking??

When it was 10 degrees out the other morning...everything on my car whined for a few miles

 

Killa

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Dec 5, 2007

#13

• Dec 5, 2007

• #13

Mustang5L5 said:

Hold cold we talking??

When it was 10 degrees out the other morning...everything on my car whined for a few miles

Click to expand...

30 degrees up, I never seen any less then that here. thanks god, if its I will end up buy a beater honduh for winter beatler.

 

the_tool_man

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May 30, 2002

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Dec 14, 2007

#14

• Dec 14, 2007

• #14

KillaGT said:

I beleive that now that im using it, and I like regular oil then synstec oil now too. What good brand for tranny and rear diff ? for my 1998 mustang. thanks

Click to expand...

I use Red Line synthetic and have had no issues whatsoever. I use it in the Cobra (engine oil, tranny oil, rear) and in my Expedition (engine oil, tranny fluid).

Regards,
John.