Power steering fluid based on updates

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Joined
Jul 6, 2015
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4,445
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Location
Iowa
My Car
1973 Mustang Grande 351C 2v
Making some updates to my power steering system and was hoping someone could tell me if I should still us Type F or switch to something else. Changed over to a Saginaw pump using my original steering box but having it rebuilt and converted to quick ratio by powersteering.com. I wasn't sure if the pump or box determine did which fluid to use.

 
I recently completed the same work, via Power Steering Services, and went with Redline fluid.

 
Talked to the guy from Powersteering.com today. He said to stick with the Type F as that is what the box was designed for and it is less likely to foam up.

 
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