Differential Fluid Change
Thread Starter
"Rodstoration &am p;quot; In Progres
Joined: Jun 2004
Posts: 1,397
Likes: 1
From: Frisco TX
Differential Fluid Change
I am about to change the fluid in my differential and have heard that I need to replace the fluid (with new additive) then drive the car making very tight turns. Redrain the fluid and replace again.
Does everyone recommend this process?
Does everyone recommend this process?
Advanced
Joined: Jun 2004
Posts: 63
Likes: 0
From: North Canton Ohio
I agree that you need to use posi additive with the new fluid (I like the synthetics best) and you should perform a series of tight turns in both directions, say in a parking lot, to help work the addidtive in. I don't believe you need to drain and refill afterwards again, however.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Originally Posted by 80TexasC3
I am about to change the fluid in my differential and have heard that I need to replace the fluid (with new additive) then drive the car making very tight turns. Redrain the fluid and replace again.
Does everyone recommend this process?
Does everyone recommend this process?
Just change it and do the figures 8's and you're done.
Le Mans Master
Joined: Aug 2000
Posts: 6,362
Likes: 7
From: Brazos TX
Cruise-In IV Veteran
Cruise-In V Veteran
Yep, what they said. No need to drain and re-fill again. I don't use the additive when using Mobil 1 but others do. Definitely use the additive if using normal oil.
Race Director
Joined: Apr 2000
Posts: 17,676
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
First time I heard of changing it twice, I was getting some vibration and noise in the rear so I just changed mine last weekend and it is much better but there is still a little chatter left I wonder if I should change it again ?
