"Power Steering Fluid" & Auto Trans Fluid

"Power Steering Fluid" & Auto Trans Fluid - Interchangeable?

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Nomen Nescio - 10 Oct 2004 22:40 GMT

A few years ago, when you needed to change or add to the power steering
pump, you simply used Dextron automatic transmission fluid.

First of all, why do they even call this stuff, "fluid", when it is really
a hydraulic oil? But more importantly, is there any fundamental difference
in the composition and properties between these two fluids? In a pinch, am
I safe to use automatic transmission fluid in the power steering pump,
regardless of the recommendations.

Maybe its just a scam to get you to buy from Mopar instead of Pep Boys.

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maxpower - 09 Oct 2004 23:09 GMT

Isnt hydraulic oil also called a fluid?? And chrysler has been putitng ATF 4
in the Power steering system from 1993 to present check the TSB 19-005-03
Glenn Beasley
Chrysler Tech

> A few years ago, when you needed to change or add to the power steering
> pump, you simply used Dextron automatic transmission fluid.
[quoted text clipped - 6 lines]
>
> Maybe its just a scam to get you to buy from Mopar instead of Pep Boys.

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nobody@home.net - 11 Oct 2004 12:04 GMT

>snip
>First of all, why do they even call this stuff, "fluid", when it is really
>a hydraulic oil? But more importantly, is there any fundamental difference

"Fluid" sounds more impressive, implying it was specially formulated.
The word fluid is a general term for either liquids or gases as
opposed to solids. Air and water are both fluids, but air is a gas
and water is a liquid.

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