Re: [Chrysler300] Powersteering fluid

["Ray Melton rfmelton@xxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx>]

Hello All -

When I was restoring my late father's 1957 300C, I am pretty sure that I was told by several on this listserver to use "any ATF", so I even sucked out some of the ancient fluid in the reservoir and saw that it was actually fairly dark, with a pinkish cast.  I then refilled with Castrol generic pink ATF labeled "for use in most automatic transmissions" - no Type designation.  Power steering now seems to work fine with no leaks, but now I am wondering whether I should try to replace the new pink ATF with a generic "Power Steering Fluid" from AutoZone or Pep Boys, etc.  I am rather dismayed to learn of a PS Fluid label advising "do not use in transmissions", since one of the main components of an automatic transmission is a PUMP!  If PS fluid is OK for the pump in a PS application, why would it not be applicable to the pump in a transmission application??  What is the origin of the advice against mixing PS fluid with ATF (although it could easily make sense, but I would like to know the REAL reasons and source.).   If the strong consensus is that I should totally replace the ATF currently in there, what is the suggested best way to get ALL the old stuff out?  I could probably suck a little of it out of the reservoir, but I know there will still be quite a bit left in the steering box and high-pressure hose.  If I then put in the new  "Power Steering Fluid", I am certain that I will be mixing some new fluid with the residual ATF, and can't think of a good way to get 100% new fluid all through the system.

Any firsthand experience?  Advice and rationale are welcomed.

Ray Melton  Las Cruces, NM  1957 300C  cvt

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On 9/19/2020 6:48 AM, dverity@xxxxxxxxxxx [Chrysler300] wrote:

 

Power steering fluid.

Don

 

From: mailto:Chrysler300-noreply@xxxxxxxxxxxxxxx

Sent: Friday, September 18, 2020 11:52 PM

To: mailto:Chrysler300@xxxxxxxxxxxxxxx

Subject: [Chrysler300] Powersteering fluid

 

 

Hello group

What type of oil should be used for power steering when changing oil?

/Tomas Turovaara

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Posted by: Ray Melton <rfmelton@xxxxxxx>

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