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post #1 of 7 Old 12-21-2012, 10:33 AM Thread Starter
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Fluid for power steering

What type of fluid do you guys use for your 7.3 ? What does Ford put in when they built the truck?

I am thinking of drawing out most of the old fluid and replace it with new fluid. I am not too sure what would be best to put in.
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post #2 of 7 Old 12-21-2012, 11:08 AM
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First, don't use Anything but ATF.

Next, Flushing is preferred over just replacing some in the res.

Ever flushed your powersteering?
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post #3 of 7 Old 12-21-2012, 11:33 AM
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I made that almost fatal error, I put power steering fluid in it, wasn't thinking about it being part of the brakes, but it did get flushed after I found out it was supposed to be ATF, I will say this about that flush, you should lift the front end off the ground, I had 2 holes in the ground from turning the front tires

My avatar is my goal for the 7.3
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post #4 of 7 Old 12-21-2012, 11:49 AM
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Quote:
Originally Posted by mas360 View Post
What type of fluid do you guys use for your 7.3 ? What does Ford put in when they built the truck?

I am thinking of drawing out most of the old fluid and replace it with new fluid. I am not too sure what would be best to put in.
Mercon ATF will do the job just fine. Some people spring for synthetic, I have conventional wally world ATF Dex/Merc in mine and it works well.

Here is a video, it is really easy to do.


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post #5 of 7 Old 12-21-2012, 01:26 PM Thread Starter
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Thanks guys. ATF it will be.

Rufushusky, thanks for the video. That really helps. I am a little confused when this guy says during the test drive that his brake improves with the steering fluid change. How does steering system have anything to do with brake system?

Last edited by mas360; 12-21-2012 at 01:41 PM.
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post #6 of 7 Old 12-21-2012, 02:43 PM
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They both derive their power from the PS pump. That fluid is piped to the hydraulic (as opposed to vacuum) brake booster.
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post #7 of 7 Old 12-25-2012, 08:45 AM Thread Starter
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Hey guys, I just did the flush with Walmart Merc/Dextron. The toughest part was to take the hose off the metal nozzle. I eventually had to cut the hose. Luckily it was long enough for me to re-attach it.

Again thanks you all for advices and especially the video.
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