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How log does it take for PS fl;uid to circulate #869957 03/31/07 07:53 AM
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chefwong Offline OP
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How long does it take for PS fluid to circulate from the reservoir ? If I do the baster drain/fill and do a 40 mile drive, is the fluid circulated enough in the reservoir to do another turkey baster drain/refill ?

Of does it take much longer for the fluid to circulate completely from the reservoir

Re: How log does it take for PS fl;uid to circulat [Re: chefwong] #869958 03/31/07 07:54 AM
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ThirdeYe Offline
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Not long at all, you can turn on your car and turn your wheel from lock to lock and it'll probably have circulated. I just did a baster drain/fill a few days ago, and I checked it after just going around the block and it was already circulated (went from clear to a light brown from the old fluid mixing)


07 Honda Accord - 622k - Supertech 5W-20/Purolator PureOne PL14610
98 Camaro Z28 (Bright Purple Metallic, 1 of 104) - 127k - Mobil 1 HM 5W-30/Fram Pro Synthetic XG3506
Re: How log does it take for PS fl;uid to circulat [Re: ThirdeYe] #869959 03/31/07 10:53 PM
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chefwong Offline OP
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I just did 2 changes via the baster. Both till the reservoir till it was completely empty. Between that was the 40 mile drive I needed to take today...

I have 2 bottled water bottles with fluid that's like a deeeeeeep burgandy color. It has been 40K miles on it.

I guess I'll do this everyday this week after coming back from work and maybe by the 5th or 6th day, the laws of diminishing returns will the fluid be more new than less.

Re: How log does it take for PS fl;uid to circulat [Re: chefwong] #869960 04/01/07 10:44 AM
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mechtech2 Offline
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40 miles is way overkill. You can perform extra flushes right then and there by starting it up for a minute, and maybe working the wheel back and forth.

Re: How log does it take for PS fl;uid to circulat [Re: mechtech2] #869961 04/01/07 05:51 PM
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ThirdeYe Offline
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Mine was more of a light brown/chocolate color. You could see through it if held to a light. I guess it wasn't too bad, but it's easy enough to do, and only around $3.50 for a bottle of it so I thought what the heck, might as well. And mechtech is right


07 Honda Accord - 622k - Supertech 5W-20/Purolator PureOne PL14610
98 Camaro Z28 (Bright Purple Metallic, 1 of 104) - 127k - Mobil 1 HM 5W-30/Fram Pro Synthetic XG3506
Re: How log does it take for PS fl;uid to circulat [Re: ThirdeYe] #869962 04/02/07 01:51 AM
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porcupine73 Offline
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Absolutely; power steering fluid is an oft neglected service. Yes even a few minutes of idling would be sufficient to mix it. Typical power steering pumps are probably 2-5 gpm. Some power steering pumps actually circulate more fluid at idle than at higher rpms.

Re: How log does it take for PS fl;uid to circulat [Re: porcupine73] #869963 04/03/07 10:21 PM
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shoz123 Offline
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Leave it in a couple of days. If the PS fluid is like the ATX fluid Fords now take the detergents will clean it very well but it needs to be in there a while to dissolve the carbon built up internally.

Re: How log does it take for PS fl;uid to circulat [Re: shoz123] #869964 04/04/07 02:03 AM
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m2200b Offline
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40k and deep red sounds like atf fluid in pretty good shape.

Re: How log does it take for PS fl;uid to circulat [Re: m2200b] #869965 04/04/07 08:02 AM
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JackFish Offline
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I can attest it pumps rather quickly.
I unhooked the return line from mine and started the car.
There was much fluid shooting out all over, so I don't recommend this method!
Next time I will pull the coil wire and use a remote switch to crank it just a bit.
And stick the end of the hose in a bottle!
Just plug the inlet to the pump and pour in fresh stuff.

Re: How log does it take for PS fl;uid to circulat [Re: JackFish] #869966 04/04/07 11:35 AM
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mechtech2 Offline
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shoz - Leaving it in may help clean things, but it's good to have clean red fluid first. Then check it after a while.
ATF has minimal detergents, if any, BTW.

Re: How log does it take for PS fl;uid to circulat [Re: JackFish] #869967 04/04/07 08:39 PM
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ekpolk Offline
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Quote:

I can attest it pumps rather quickly.
I unhooked the return line from mine and started the car.
There was much fluid shooting out all over, so I don't recommend this method!
Next time I will pull the coil wire and use a remote switch to crank it just a bit.
And stick the end of the hose in a bottle!
Just plug the inlet to the pump and pour in fresh stuff.




Yeah, you've got to be careful when messing with PS lines. I don’t have any figures in front of my for psi, but in essence, the PS is a hydraulic system, and some of them operate at very high pressures. It’s quite possible to injure one’s self, a bystander, or damage your car if you unleash that pressure in the wrong way. This would be one of those parts of your car you really shouldn’t mess with unless you’re really sure of what your doing.


18 Prius Two-Eco (L-Ion Batt), Mag Grey, 4000 miles (M1 AFE 0W-20).
07 Avalon XLS, Cassis Pearl, only 70k miles (M1 EP 5w-30).
04 Prius, Black, 200k miles (M1 EP 5w-30). 2006-2019 --RIP 😥
Re: How log does it take for PS fl;uid to circulat [Re: ekpolk] #869968 04/04/07 08:56 PM
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JackFish Offline
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Quote:

This would be one of those parts of your car you really shouldn’t mess with unless you’re really sure of what your doing.



Unless you bought the car specifically as a hobby so you could learn to mess with that stuff.
I just finished giving it the annual flush, and it went much better this time.

Re: How log does it take for PS fl;uid to circulate [Re: chefwong] #869969 04/04/07 11:04 PM
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hominid7 Offline
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I read up on this not long ago when i was going to turkey baster flush and at least in one cars PS pump, it indicated it moved 1.5 GPM (gallons per minute) when the wheels were turned at least 15* either way.

So i think you could just start your engine, turn the wheel slowly one direction, then the other, and consider it mixed pretty good.

I can't remember the exact calculation, but i think assuming you are removing at least 50% each time, a total of 4 empty and refills should give you greater than 95% fresh fluid.

Most cars PS pumps are self bleeding. It may make some funky noises a couple of days after, but it should quieten down. Check your level every day for at least 3 days after to make sure its not getting too low as bubbles come out and the level lowers a bit.

Walmarts turkey basters are the best i've found. They are clear and hold a lot.


Dan W.
2017 Hyundai Elantra
Re: How log does it take for PS fl;uid to circulat [Re: hominid7] #869970 04/04/07 11:09 PM
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Sparkman Offline
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1 = 50%
2 = 75%
3 = 87.5%
4 = 93.75%
5 = 96.875%

Re: How log does it take for PS fl;uid to circulat [Re: Sparkman] #869971 04/05/07 01:09 AM
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porcupine73 Offline
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PS pumps usually have an interal pressure relief at maybe 1000-1200 psi. When you hear that squealing/weird/loaded sound with the wheel fully turned this valve is probably opening.

The biggest risks in pulling a PS pump line is running the pump dry and/or making a mess and/or injuring yourself somehow in the process.

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