Correct power steering fluid

[JJHstang]

What type of power steering fluid should I use in my 71 Mach 1?
I read conflicting information.
Some say use a certain type transmission fluid, others say ATF transmission fluid can damage the pump.

 

[HemiRick]

ATF has friction modifiers that are not good for the PS, use PS fluid.

 

[a91what]

I have never had a problem using type F fluid in my PS system.

 

[JJHstang]

Thank you all for the info.

Question.
I plan on sucking out the existing fluid or as much as I can, filling with fresh, then repeating a few times. How much fluid does the pump need.
Does anyone have a link to video on flushing 71 - 73 Mustang fastback or a video that I can look up to help me even if not the exact year Mustang?

 

[JJHstang]

Getting confused which is not unusual.
I have read do not use ATF type transmission fluid use Type F.
When searching Type F power steering fluid the search either comes up with Type F Transmission fluid or just Power Steering fluid no type F. Also someone said don’t use power steering fluid.

So I should be using Type F transmission fluid just not ATF.?

 

[JJHstang]

Sorry everyone
I apologize for taking up your time. I will purchase Typpe F transmission fluid. I should have looked at my dipstick.
Again sorry.

 

[a91what]

No problem, type F I use in all Ford ps systems up to 93.. it quites them down, ps fluid on older systems eats the seals.

 

[JJHstang]

Never have used P/S fluid but have added ATF. I am glad people said use Type F because my dip stick just shows use Automatic Transmission Fluid not Type F.
Today I suctioned out as much as I could, added new Type F, ran until warm. Suctioned out again, added new. I will run awhile and do it again a few more times. I don’t have a manual, not sure how much the system actual has in it. I do know I can’t suction to much at a time.

 

[7991LXnSHO]

ATF has friction modifiers that are not good for the PS, use PS fluid.

Automatic Transmission Fluid = ATF (It does not mean Alcohol, Tobacco & Firearms in this case.)
In older Ford’s, it does not mean Dextron or Mercon ATF. It means the same ATF as an automatic of the same make and year would use.

 

[manicmechanic007]

Factory fill was type F ATF

 

[zookeeper]

Used Type F for longer than I care to remember. Works fine

 

[HemiRick]

View: https://www.youtube.com/watch?v=5b0brwbSdZw

 

[a91what]

https://www.motorcraft.com/us/en_us/home/our-products/chemicals-and-lubricants/transmission-fluid/type-f-automatic-transmission-fluid-and-power-steering-fluids.html

I don't care what dude says... Ford specs type F power steering fluid.

 

[Potomus Pete]

F Type for me. When I changed my rack I spent hours reading, and F Type was the verdict.

 

[Potomus Pete]

That was a year ago, and it works/sounds great.

 

[7991LXnSHO]

F Type for me. When I changed my rack I spent hours reading, and F Type was the verdict.

View: https://www.youtube.com/watch?v=5b0brwbSdZw

That’s not what the manufacturer info for vintage Fords or GM’s say. The newer stuff and imports often spec something different, but not our cars. Most of power steering fluids at the chemical idle are thinner and cheaper than bulk hydraulic fluid. This company might sell something better, or it still might be overpriced Type A equivalent lube.

 

[RositaSchaefer]

View: https://www.youtube.com/watch?v=5b0brwbSdZw tracking software

My power steering pump comes standard with ATF, GM. ATF recommended lol

 

[manicmechanic007]

True story Rosita, The ZF pumps always used Mercon The Eaton, Thompson and C2 pumps all used type F The Eaton was the real early one with the reservoir on the top like the full size cars of the early 60's The Thompson is the pencil neck pump and you all know the noisy C2. The ZF is the newer little one that comes on Fords now since about 1990-91 or since the 4.6 modular came out