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ATF for power steering fluid

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Danonly55
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ATF for power steering fluid

Post by Danonly55 » Sun May 20, 2018 11:04 am

My owners Manuel says to use ATF for my power steering fluid. Is this a type "O" ? :? :?
1996 Volvo 850 sedan base
1980 Mercedes benz 300sd " Shotzie"
1997 Ford f350 7.3

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Re: ATF for power steering fluid ???

Post by misha » Sun May 20, 2018 11:26 am

Yes...atf.It is Dexron II or III.
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Re: ATF for power steering fluid ???

Post by FLXC90 » Sun May 20, 2018 12:03 pm

Not a typo-prior to 99 (I believe) they used ATF, check the owner's manual online for spec. Later models used power steering fluid (the green stuff) Don't mix the two.
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Re: ATF for power steering fluid ???

Post by ecbsykes » Sun May 20, 2018 12:31 pm

ATF or regular PS fluid (Pentosin) works fine. Like FLXC90 said though, don't mix the two. Therefore, if you're not sure what's in there now and need to top up, I'd flush the whole system.

I've been using Mobil 1 Syn ATF in my PS system for about 8 years now.
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Re: ATF for power steering fluid ???

Post by SuperHerman » Sun May 20, 2018 4:52 pm

What does your current fluid look like? Is it reddish to brown or greenish to brown? Both fluids will go towards brownish as they get dirty and old, but the base color is different. If reddish than you have ATF and if greenish then you have PS fluid. This assumes no prior incorrect service.

I think I read somewhere that some of the owner's manuals were incorrect so the suggestion to check on-line is smart as the proper fluid was updated in the on-line version.
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Re: ATF for power steering fluid ???

Post by Danonly55 » Sun May 20, 2018 8:46 pm

Thanks everybody for your input, My fluid is a reddish brown so I will top off with ATF. The flush will have to wait until next month.
1996 Volvo 850 sedan base
1980 Mercedes benz 300sd " Shotzie"
1997 Ford f350 7.3

Life is tough, but it's tougher when your stupid'
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Re: ATF for power steering fluid ???

Post by erikv11 » Sun May 20, 2018 10:00 pm

ecbsykes wrote:
Sun May 20, 2018 12:31 pm
... I've been using Mobil 1 Syn ATF in my PS system for about 8 years now.
Me too! In all of my P80 cars.
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'96 855 NA, 140k
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Re: ATF for power steering fluid ???

Post by abscate » Mon May 21, 2018 4:31 am

I’ve used ATF , generic PS fluid, and finally Pentosin in my 1999, to reduce the count of fleet PS fluid bottles
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Re: ATF for power steering fluid ???

Post by misha » Mon May 21, 2018 4:39 am

Danonly55 wrote:
Sun May 20, 2018 8:46 pm
...The flush will have to wait until next month.
You don't need to flush power steering system.
All you need to do is to remove old atf from a tank with a big syringe and put in a new atf fluid.
1 liter is enough,do not overfill.
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Danonly55
'97 850 2.5 20v /fully equipped/ Motronic 4.4 / polar white wagon
'91 Citroen XM 2.0 SI /fully equipped/mandarine red metallic
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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Danonly55
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Re: ATF for power steering fluid ???

Post by Danonly55 » Mon May 21, 2018 6:53 am

Thanks Misha, I like that idea better but what about the lines and rack system there should be a fair amount of fluid in those areas?
1996 Volvo 850 sedan base
1980 Mercedes benz 300sd " Shotzie"
1997 Ford f350 7.3

Life is tough, but it's tougher when your stupid'
" John Wayne

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