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ATF in PS #5385841 03/25/20 10:24 PM
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CapitalTruck Offline OP
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I just had some power steering hoses changed out in my 13 Silverado. They are thankfully available aftermarket at NAPA. The shop refilled the ps with atf fluid. Book calls for PS fluid. So, I (myself) exchanged the ATF out and put PS fluid in, per the GM spec. I was going to call the garage and just gently mention that whoever worked on my truck should always check alldata or whatever for the specs. However, maybe it is common practice for places to use ATF fluid. Before I call down there was curious if anyone has any history with this.

Last edited by CapitalTruck; 03/25/20 10:24 PM.

2013 Silverado 4.8L VVT 4x4 97k mi - ACDelco Dexos Full Synthetic 5w30 (ExxonMobil variant), ACDelco PF48E
Re: ATF in PS [Re: CapitalTruck] #5385845 03/25/20 10:29 PM
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Chris142 Online Content
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All older cars used atf. Ford used type F into the 2000's.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: ATF in PS [Re: Chris142] #5385852 03/25/20 10:37 PM
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CapitalTruck Offline OP
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Yeah, I’ve had a few that used ATF. Why even have PS fluid then?


2013 Silverado 4.8L VVT 4x4 97k mi - ACDelco Dexos Full Synthetic 5w30 (ExxonMobil variant), ACDelco PF48E
Re: ATF in PS [Re: CapitalTruck] #5385853 03/25/20 10:39 PM
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rubberchicken Offline
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Mercruiser marine engines with power steering are 99% GM engines, with GM power steering pumps. They usually recommend ATF - Dexron III or higher, but power steering fluid works fine. The exact same pump is on my 97 Suburban and it calls for power steering fluid. One thing different is that the Merc setups usually have a PS steering cooler.

Re: ATF in PS [Re: CapitalTruck] #5385864 03/25/20 10:51 PM
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bbhero Online Content
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My car said you can use Dexron VI in the power steering pump. And my car is a 2008. I have used Dexron VI with no issues.


Nissan Altima 3.5 Coupe
Cam2 Full synthetic 5w30 Carquest Blue 84356
"Treat your family like your friends and treat your friends like your family."
Re: ATF in PS [Re: CapitalTruck] #5385869 03/25/20 11:07 PM
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Snagglefoot Online Content
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There’s a lot of hand wringing but generally GM calls for their power steering fluid (or knock-offs). I use AC Delco and have 200,000 miles on the original pump that powers the power steering and the hydro-boost brakes.

For my 2000-2007 Ford’s I use Mercon V ATF. The older one has 160,000 miles on the original pump.


If you want the job done right......do it yourself.
Re: ATF in PS [Re: CapitalTruck] #5385875 03/25/20 11:34 PM
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Wolf359 Offline
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Yeah Ford uses Mercon V in their power steering and transmission.

Re: ATF in PS [Re: CapitalTruck] #5385904 03/26/20 05:06 AM
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demarpaint Offline
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All three of my vehicles use ATF. The 88 E-150 uses type F. The 08 and 2016 Jeeps use ATF+4. You should be fine.


God Bless Our Troops

Re: ATF in PS [Re: CapitalTruck] #5385910 03/26/20 05:42 AM
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Jimzz Online Happy
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ATF is perfectly fine. For a large corp like GM they save a few dollars using cheaper PS fluid. But for a shop no real reason to keep general PS fluid when most can use or even call for ATF.


yup
Re: ATF in PS [Re: Snagglefoot] #5385916 03/26/20 06:08 AM
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4WD Offline
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My 2010 GMC used PSF. When it was just 3 years old, took a sample … it was black. Using a super syringe was able to pull 12 ounces, drive and repeat. That cleared it up enough to start doing 12 ounce per year … kept doing that and traded the truck when 8 years old. Used Lucas synthetic and it stayed clear.
(One of only 2 Lucas products I have used).

Re: ATF in PS [Re: 4WD] #5385923 03/26/20 06:40 AM
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RyanY Offline
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The owners manual for the OP's truck recommends GM PSF or equivalent, so I would insist on an equivalent PSF. NAPA, AZ, CQ, etc are low cost options that work just fine, so I'm not sure why a shop would intentionally use ATF here. I think it would be worth asking for an explanation.

Also, for anyone planning to DIY the PSF, I have also had great results with Lucas synthetic PSF. Unlike user @4WD I have used more than 2 Lucas products...the PSF is the only one I really like!
Originally Posted by 4WD
Used Lucas synthetic and it stayed clear.
(One of only 2 Lucas products I have used).


Last edited by RyanY; 03/26/20 06:45 AM.

2007 Cadillac CTS 3.6L >130k miles; mix of PUP/Magnatec 5W-30 + ACDelco PF2129G

2012 Honda Odyssey EX-L >107k miles; STP (Amalie) 0W20 + ACDelco PF2057
Re: ATF in PS [Re: CapitalTruck] #5385955 03/26/20 07:34 AM
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Cujet Offline
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My 2009 F150 takes Mercon V, ATF in the power steering system.


People who count on their fingers should maintain a discreet silence.
Re: ATF in PS [Re: CapitalTruck] #5385967 03/26/20 07:52 AM
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64bawagon Offline
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I ran it in my 05 Silverado for 150,000 miles with zero issues. The pump was undersized for the added weight of the diesel so GM suggested using Synthetic PS fluid. I used dex 6 at a 1/3 of the price. The majority of our fleet at work used ATF. We even had one that was spec'd for 15W40 diesel oil. The Mobil rep ran the question by one of their engineers and he replied that it was "close enough and an acceptable substitute"


64 Chevy wagon, 10 Jeep Wrangler, 18 Silverado 1/2 ton
Re: ATF in PS [Re: CapitalTruck] #5385998 03/26/20 08:50 AM
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Fordiesel69 Offline
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ATF is a better more wide used formula. More R&D goes into it than with PSF. I can only tell you that with ford it calls for TYPE F, MERCON, or MERCON V.


99' Crown Vic Police - SAP (P71)
00' Crown Vic Police - SAP (P71)
08' Crown Vics Police - SAP(P71's) (total of 3 garage queens)
13' Taurus Police
14' Fusion S Base
Re: ATF in PS [Re: CapitalTruck] #5386018 03/26/20 09:20 AM
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Sam_Julier Offline
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I run Full Syn DEX VI in the Volvo 240 PS systems. These are GM Type II Saginaw pumps. Drain and fill the reservoir every 10k. I've never had an issue or noise, even at -15 degree starts in Stowe VT.

Previously I used Redline PS fluid when the cSt was higher than it is now. Lots of squealing during the below zero start ups.

I hope this helps.


2013 Toyota Avalon Hybrid TGMO 0W20, 81k
1993 Volvo 245 T5 10W30, 168k
1993 Volvo 244 T5 10W30, 177k

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