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Upgrading power steering cooler?

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Yeah cooler steering fluid temps and most likely increasing the longevity of the pump and other components. It really isn't necessary TBH. The people that would most likely benefit from it the most would be those that are into autocrossing.
 
I yanked my cooling "loop" years ago and just run a rubber hose from the hard return line straight back to the reservoir, and have never had any issues. I also auto-crossed the car like that and it worked just fine.

If you are doing heavy road racing or auto-crossing and boiling the fluid, then it's probably worth putting a decent cooler in...otherwise even the factory cooler isn't really necessary. A dirty or worn out pump is probably more likely to cause problems than over-heated fluid.

YMMV of course.
 
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