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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Power Steering Drain

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Old Jun 5, 2026 | 03:36 PM
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Default Power Steering Drain

Ok, so I f'd up! I was replacing a front caliper and brake pads on my 2007 5.4 3v late last night. While bleeding the brakes I noticed that I needed to add some brake fluid. In a hurry, I grabbed the brake fluid and added it to the power steering reservoir. I realized what I'd done right away. The truck has been started and the wheels turned once since. Will I be ok just draining the reservoir, or should I drain and flush the entire power steering system? I did read that if I drain it I will have to bleed the lines, but I'm not sure if the brake fluid would've had bled down into the lines and cooler/pump at this point?

Also, how important is using the caliper slide pin with the bushing? One of the new caliper slide pins wouldn't slide, so after pounding it out with a sledge hammer, I pulled one from the old caliper.

Any help is appreciated!
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Old Jun 5, 2026 | 03:42 PM
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i would flush the system, if the truck wasn't started you would be alright with just the reservoir
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Old Jun 6, 2026 | 12:11 AM
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shouldnt have started it for whatever reason you did.
if you needed to move it, could have pushed it.

You know this now.

Bunch of flushes...
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Old Jun 6, 2026 | 08:27 AM
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It won't hurt a thing
It's one of the old tricks where, "if I tell you, I have to kill you"
* Brakefluid added to a power steering system will swell the sels and soimetimes make a leaking one quiit leaking
Of course, the books will say your whole system, is destroyed
They sell more pumps, racks and fluid that way
Do not sweat it and drive is my suggestion
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Old Jun 7, 2026 | 06:57 AM
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use a turkey baster and suck out the reservoir, fill her up with the correct fluid, be on your way.
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