Fluid choice?
Thread Starter
Race Director
Joined: Sep 2004
Posts: 17,786
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From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Fluid choice?
Synth ATF or GM power steering fluid?
For the Power steering of course.
What is so special about the PS that is need "special" gm fluid and not ATF like others.
Thanks
For the Power steering of course.
What is so special about the PS that is need "special" gm fluid and not ATF like others.
Thanks
Burning Brakes
Joined: Oct 2001
Posts: 926
Likes: 200
From: TX
Originally Posted by screw991le
Synth ATF or GM power steering fluid?
What is so special about the PS that is need "special" gm fluid and not ATF like others.
Thanks
What is so special about the PS that is need "special" gm fluid and not ATF like others.
Thanks
I would use a synthetic PS fluid for your system if not the GM power steering fluid that meets the spec for corvettes. I understand Valvoline synthetic PS fluid meets the spec.
verysoon
Burning Brakes
Joined: Aug 2000
Posts: 1,132
Likes: 1
From: Morganton, NC, USA
I've been filling and sucking out my PS resevoir for the last 2 weeks, trying to get a clear fluid out of the tank. I've used about 50 ounces of Valvoline synthetic PS fluid for a total of 5 changes. Does anyone know what the total fluid capacity of the system is? If the ratio was 50 % tank and 50 % rest of the system, the first time you change the fluid in the resevoir, you should have a 50-50 mixture after circulating while driving. After the second suck and fill, the percentage of old fluid should be 25 %. After the 5th time, the percentage of old fluid in the system should be 3.125 %, and the fluid should be fairly clear. Of course, if there is much more fluid in the system than in the resevoir, these numbers change, but the withdrawn fluid should be somewhat lighter. I don't mind spending a little money on a couple quarts of Valvoline synthetic PS fluid as I'm doing track days and Chevy is concerned enough about PS fluid that they put in a cooler. 
