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Power Steering Fluid

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Old Sep 30, 2007 | 12:15 PM
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Power Steering Fluid

What type of power steering fluid is best for my F350 7.3L Diesel 4x4 Truck? I have no owners manual for the vehicle and help would be appreciated.
 
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Old Sep 30, 2007 | 12:19 PM
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Tenn01PSD350
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Mercon tranny fluid is the recommended fluid in there. Is that the best? Don't know but if I were to put a synthetic in there I would be sure to flush very well as it operates the boost/power for the brakes too. Keep it simple.
 
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Old Sep 30, 2007 | 12:23 PM
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Thanks, I was not sure of what to put in and thanks for the heads up.
 
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Old Sep 30, 2007 | 03:16 PM
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I switched to Mobil 1 syn ( for Mercon trans fluid).. works good..available at auto zone..
 
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Old Sep 30, 2007 | 03:55 PM
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Originally Posted by clintbonnie
I switched to Mobil 1 syn ( for Mercon trans fluid).. works good..available at auto zone..
I did the same thing...Get a section of clear hose to put on the pump fluid return.

Put end of clear hose in suitable container.

Start engine, have helper turn steering wheel and pump brakes while you add fluid throught funnel to power steering reservior.

When fluid runs bright red shut it off and put back together.

Enjoy a quiet power steering pump!

I used two or three quarts Mobil 1 iirc
 
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Old Sep 30, 2007 | 05:31 PM
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so is power steering fluid any different? what if u dont know whats in ur pump? can i just add something to it?
 
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Old Sep 30, 2007 | 05:35 PM
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Originally Posted by 2002f2507.3LPS
so is power steering fluid any different? what if u dont know whats in ur pump? can i just add something to it?

If you think you can, I would flush it and put in new fluid.
 
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Old Sep 30, 2007 | 05:41 PM
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Our trucks don't use "power steering fluid". The power steering pump uses ATF. When I had an bumpup last year and busted the pump coolant line, the guy that made the quick repair to the line add about 2/3 of NAPA power steering fluid to the resevoir. It was my fault for not watching, i guess the cop had my attention. Anyway, pump sounded bad all the way home 350+ miles. Got home and called back to the station that made the repairs and he said that he did use power steering fluid and also stated that is what goes in there. I flushed the system with syn atf and it has never sounded better.
 
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Old Sep 30, 2007 | 07:25 PM
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Tenn01PSD350
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Originally Posted by 2002f2507.3LPS
so is power steering fluid any different? what if u dont know whats in ur pump? can i just add something to it?
They are all hydraulic fluids but with different properties. I have topped mine off with STP PS fluid in the past in a pinch with no problems but would try to avoid mixing fluids if possible.
 
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