Posi-Trac Fluid Change?

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Feb 8, 2003 | 10:27 PM

Elaine Newman

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From: Sooke B.C.

Posi-Trac Fluid Change?

Hey Guys, how often should I change my posi-trac fluid? I've owned the car only 1 yr. and it's kind of a darker color than normal. :steering: :party:

Feb 8, 2003 | 11:01 PM

GDaina

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From: In Dreams There Is Truth Ohio

Re: Posi-Trac Fluid Change? (Elaine Newman)

Elaine, for peace of mind, change it now, and replace the fluid with Mobil 1 synthetic fluid.

Feb 9, 2003 | 12:13 AM

Melting Slicks

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From: TEXASTEXASTEXASTEXAS TEXASTEXASTEXASTEXAS

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Re: Posi-Trac Fluid Change? (GDaina)

:iagree: This is one of the few jobs I don't do myself--it's messy & difficult to get to, & any quick-lube kind of place will have a machine to suck the old fluid out. It's a cheap job, too--I paid $18 to have it done (I brought my own oil & posi-lube additive). You'll need to drop your spare tire carrier before you go so they can get to it.

JB

Feb 9, 2003 | 12:41 AM

Smokehouse69

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From: Semper ubi, sub ubi

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Re: Posi-Trac Fluid Change? (Elaine Newman)

Don't forget to add the Posi-trac additive! I know that some of the synthetics say you don't need to use it, but in my humble opinion put it in anyway!

Feb 9, 2003 | 02:32 AM

mapman

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From: Wichita KS

Re: Posi-Trac Fluid Change? (Smokehouse69)

Quote:

Don't forget to add the Posi-trac additive! ....

:iagree:

Feb 9, 2003 | 07:56 AM

Larry B.

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Re: Posi-Trac Fluid Change? (JB)

What ever you do... DO NOT let a quick lbe place use their oil. Bad news. Most people use the GM posi oil AND the additive. I am not sure about the new synthetics...Some say it is too slick for the posi clutches to work correct. :nono:

Feb 9, 2003 | 09:41 AM

page62

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From: Coming home from Luckenbach Texas

Re: Posi-Trac Fluid Change? (Elaine Newman)

I'm gonna disagree on the synthetic, too. Just go to your Chevy dealer and get 2 bottles of differential fluid and 1 bottle of posi additive. It worked for me, and it cleared up my clunking posi clutches!

1 fix done, 99 to go! :smash:

Feb 9, 2003 | 10:07 PM

1978shark

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From: Franklin Ohio

Re: Posi-Trac Fluid Change? (Elaine Newman)

I did mine last week for the second time and found that it is by far easier to remove the spare tire and carrier. It is amazing how much more room you have to get at the plug. I stuck a small hose in and ran it down to a drain pan. Gravity emptied the diff. in about 45 minutes. I used the GM gear lube and a bottle of the additive THIS time and no more noise. My 0.2.