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Old 11-20-2005, 11:16 PM   #1
veightkiller
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Default How to flush power steering fluid??

im sorry if it been covered before.but like the title say..how can i flush my power steering fluid???
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Old 11-21-2005, 09:06 AM   #2
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Basically you undo the two hard lines on the front of the rack and then crank the wheel lock to lock to expel the fluid. EDIT: the engine should NOT be running during this procedure. Refit lines, fill reservoir, bleed with the engine OFF by cranking the wheel lock to lock again, then a final bleed cranking the wheel at idle. The first bleed helps to prevent running the PS pump 'dry'.

Last edited by UkNuck; 11-23-2005 at 09:56 AM. Reason: in light of edjack's post I want to make it clear that the engine should NOT be running
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Old 11-21-2005, 09:14 AM   #3
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How often are you supposed to change things like power steering fluid, clutch fluid, etc? The Subaru maintenance schedule doesn't really seem to provide any guidance.
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Old 11-21-2005, 10:43 AM   #4
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not sure you need to worry too much about the power steering fluid, but for the clutch fluid, treat it as you do the brakes (since it's the same fluid - dot 3 brake fluid) - when it gets dark due to moisture uptake, flush it out.
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Old 11-21-2005, 10:49 AM   #5
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I only drained/refilled mine because I was replacing the rack - otherwise I don't think there's a specific interval for the PS fluid - the manual just says:

Check the power steering fluid for deterioration
or contamination. If the fluid is highly deteriorated
or contaminated, drain it and refill with new fluid.
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Old 11-21-2005, 03:08 PM   #6
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I'm at 66K and haven't done anything to my PS fluid. I asked Mulder (one of the gurus I trust on here), and he hadn't changed out his PS fluid either. Don't recall his mileage but he was up there also

I don't know when I'll actually do mine, but I guess I'll keep an eye out for it every so often.
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Old 11-21-2005, 06:59 PM   #7
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Do it when the fluid turns brown. Dip a paper towel into the reservoir to check the fluid. Here's how I do it on my BMWs:

Get two quarts of the best synthetic ATF from your auto parts store. I used Mobil 1.

Extract as much of the fluid from the reservoir as you can, using a turkey baster.

Remove the return hose from the reservoir. On BMWs, itís the hose going into the bottom center of the reservoir. Have something ready to plug the reservoir pipe, and catch any residual fluid in the reservoir. I used a rubber cap, designed to cap off vacuum lines, and a couple of shop rags.

Fit a length of rubber hose onto, or into, the return hose so that you can route it into a catch can of at least two quart capacity. I used a cut-off bleach bottle, since, being white, it is easier to do the next step, as well being an easy target for the stream of fluid.

Fill the reservoir with new fluid. Have both bottles of ATF open and handy. With one hand on the hose, aiming into the bucket, and the other on the bottle of ATF, have a helper start the engine. Keep pouring ATF into the reservoir until fresh fluid comes out into the bucket. Then shut off the engine, reattach the hose, and top up the reservoir.

DO NOT move the steering wheel with the return hose disconnected, and the engine running! It will pump lots more fluid, and, if the hose is not restrained, it will blow fluid all over!
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Old 11-23-2005, 12:26 AM   #8
veightkiller
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anyone got som pic's to do this???
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Old 11-23-2005, 09:52 AM   #9
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Well I can't help if you mean edjack's method but here's one of me undoing one of the flare nuts on the rack



I presume you don't need one of me turning the steering wheel
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Old 11-23-2005, 01:00 PM   #10
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Something else you can do is simply drain / refill the PS reservoir at more frequent intervals, say every year or so. Not as thorough as a flush, but a bit easier to do.
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Old 11-25-2005, 09:35 PM   #11
Baja Jim
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Default PS Flush Service

Believe it or not, the "standard" flush service on PS systems provided by most service personnel consists of multiple drain and fills.

Simply drain as much as possible through the cylinder housing (i.e. turkey baster, etc.) and refill. Start car and turn wheel all the way to the left and then back to the right (or vice versa) five times. Turn off and repeat. Do this about 4 to 5 times and POOF - you are done.

I too recommend Mobil Synthetic PS fluid, but a good regular PS fluid will suffice. The "cover it all" recommended interval (when nothing is published) is 50,000 miles.
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Old 03-05-2006, 03:34 PM   #12
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Will Valvoline SYN Power Power Steering Fluid work?
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Old 03-05-2006, 04:32 PM   #13
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Quote:
Originally Posted by veightkiller
im sorry if it been covered before.but like the title say..how can i flush my power steering fluid???

What I did was I pulled off the hose that was the return. Then I drained it, and filled the resouivor, then I had my freind turn on the car for about 3 seconds, to shot the stuff out of the pump it self. then put the hose back on , and fill up the resouivor. Then again turn on the car, and start the car up again, while one person turns the steering wheel, the other person, keeps filling the resouivor. It will make noise at this point while filling it up. Just keep adding fluid and bleeding the system, make sure to turn the wheel off kind of slow, and full turns. Other wise good luck, its easy after you do it once.

V
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Old 03-05-2006, 05:45 PM   #14
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Quote:
Originally Posted by v_dubs37
What I did was I pulled off the hose that was the return. Then I drained it, and filled the resouivor, then I had my freind turn on the car for about 3 seconds, to shot the stuff out of the pump it self. then put the hose back on , and fill up the resouivor. Then again turn on the car, and start the car up again, while one person turns the steering wheel, the other person, keeps filling the resouivor. It will make noise at this point while filling it up. Just keep adding fluid and bleeding the system, make sure to turn the wheel off kind of slow, and full turns. Other wise good luck, its easy after you do it once.

V
Congradulations, you answered a 4 month old question . But anyways does anyone know if Valvoline SYN Power power steering Fluid is cool to use, or do I need to just find some ATF fluid?
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Old 03-05-2006, 06:11 PM   #15
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Doesn't matter how old it is, its more the fact that others can see if they search it.


P.S. ATF is "cool enough"

V
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Old 03-05-2006, 06:12 PM   #16
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Quote:
Originally Posted by SolidSnake
Will Valvoline SYN Power Power Steering Fluid work?
I used the fill and flush method. I would never touch that flare nut in the steering rack.

I used Mobil 1 synthetic (Dexron III)
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Old 03-05-2006, 07:27 PM   #17
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So I just want to make sure I am absolutely sure "ATF" is what the power steering fluid it needs, I just think it's weird you put Automatic Transmision Fluid in the power steering resivoiour ? So the Valvoline SYN Power Power Steering Fluid is no good then, right?
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Old 03-05-2006, 07:29 PM   #18
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No. Manual says Dexron III ATF compatible ...
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Old 03-06-2006, 07:59 AM   #19
SolidSnake
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Ok, found some Mobil 1 synthetic (Dexron III)

Last edited by SolidSnake; 03-06-2006 at 08:49 AM.
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Old 03-06-2006, 01:40 PM   #20
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If you like Amsoil you can use their ATF fluid which is Dexron III compatible:
Amsoil Synthetic Universal Automatic Transmission Fluid
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Old 03-07-2006, 09:20 AM   #21
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Ive been doing the 50K on my car with friends and a friend of mine brought me some Castrol Dexron 3 Mercon stuff and I was like DUDE thats ATF WTH but he says thats what they use at his dealer so I decided to search found this thread. Thanks Nasioc for being here, I guess I'm useing this stuff.
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Old 03-07-2006, 09:29 AM   #22
Subie Gal
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Redline ATF is what i use in the race car....

and um.. yeah it's BLACK time for a flush

Jamie
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Old 03-07-2006, 09:36 AM   #23
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flushed mine at ~10k miles and replaced with M1 Dex III. haven't touched it since

car is at ~ 94k miles now

oh yeah, i used the turkey baster to remove the fluid from the resivoir, filled, drive briefly while turning the wheel lock to lock a few times. repeated process for about 3-4 times
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Old 03-07-2006, 07:56 PM   #24
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Just noticed that it says dex 3 atf on the dam cap of the resivoir LOL.
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Old 03-09-2006, 12:19 AM   #25
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For some reason the most imports take atf. besides honda, with there own fluid.
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