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Discussion Starter · #1 ·
I have been doing the turkey baster method of flushing my PS system now for awhile. I have already went through an entire 32 oz Prestone power steering fluid container by sucking out the reservoir and replacing it with fresh fluid every 500-1000 miles or so. I bought another Prestone 32 oz product.

I am still having a brown color in my PS reservoir, is this normal or should it be getting clearer?

Also would i be better off going with a full synthetic like Mobil Merc V or even just a regular brand Merc V or should i stick with the cheaper PS fluid while flushing the system slowly?
 

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i use the mercon fluid because it does not freeze like some of the designated ps fluids do. plus mercon is what ford recomends.
 

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QUOTE (901-Memphis @ May 30 2010, 12:14 AM) index.php?act=findpost&pid=807810
I have been doing the turkey baster method of flushing my PS system now for awhile. I have already went through an entire 32 oz Prestone power steering fluid container by sucking out the reservoir and replacing it with fresh fluid every 500-1000 miles or so. I bought another Prestone 32 oz product.

I am still having a brown color in my PS reservoir, is this normal or should it be getting clearer?

Also would i be better off going with a full synthetic like Mobil Merc V or even just a regular brand Merc V or should i stick with the cheaper PS fluid while flushing the system slowly?[/b]
you can use any merc V in your PS pump. I think it would hold up better then regular generic PS fluid. I need to replace mine soon too. Mine has turns that color too really quickly. I think you ll be ok tho because many people never touch their powersteering fluid other than topping off and never really kill it. I am trying to change mine tho using a similar plan like yours to see how clean the fluid can get.
 

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what year is the car in question. the older cars pre 1995 i think used ps fluid after 1995 they used mercon 3 then there is another change some were down the line when they started using the mercon v if the manual say to use mercon v use it. ps fluid has been out dated go figure i have used mercon 3 in my ps for the last 15 -20 k no problems. since i replaced it you could cause a leak or burn up the ps pump easier if using the ps fluid in a car that requires mercon v or 3.
 

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QUOTE (sadistic @ May 30 2010, 12:44 AM) index.php?act=findpost&pid=807818
what year is the car in question. the older cars pre 1995 i think used ps fluid after 1995 they used mercon 3 then there is another change some were down the line when they started using the mercon v if the manual say to use mercon v use it. ps fluid has been out dated go figure i have used mercon 3 in my ps for the last 15 -20 k no problems. since i replaced it you could cause a leak or burn up the ps pump easier if using the ps fluid in a car that requires mercon v or 3.[/b]
My bull is a gen 2 so would i hurt it here soon then when i replace the ps fluid with mercon V? isnt all ps fluid similar to trans fluid ? I read on some crown vic car forums that they have put mercon v in their early 90s vics ok.
 

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QUOTE (TAURUSGLV6 @ May 30 2010, 01:53 AM) index.php?act=findpost&pid=807820
QUOTE (sadistic @ May 30 2010, 12:44 AM) index.php?act=findpost&pid=807818
what year is the car in question. the older cars pre 1995 i think used ps fluid after 1995 they used mercon 3 then there is another change some were down the line when they started using the mercon v if the manual say to use mercon v use it. ps fluid has been out dated go figure i have used mercon 3 in my ps for the last 15 -20 k no problems. since i replaced it you could cause a leak or burn up the ps pump easier if using the ps fluid in a car that requires mercon v or 3.[/b]
My bull is a gen 2 so would i hurt it here soon then when i replace the ps fluid with mercon V? isnt all ps fluid similar to trans fluid ? I read on some crown vic car forums that they have put mercon v in their early 90s vics ok.
[/b][/quote]
viscosity is different i think the mercon v is thicker so it mite be fine to run on a older car but not sure of it cause it mite make the pump work harder trying to pump it. frying the pump or like on a newer car you may burn out the pump buy running to thin of fluid. just keep it in mind if all you here is squelching swap the fluid. i know there is a bigger hose in my 1997 to push the mercon 3 were my 1994 truck has thiner hose pushing is easier.
 

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They dont recommend using Motorcraft P/S fluid. It's Mercon or Mercon V. For you're gen, I'm pretty sure it's Mercon V.
 

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Discussion Starter · #8 ·
Its a 99 Vulcan, so i should not even be using regular Prestone Power Steering fluid? That is weird. I don't have a manual i got the car used years ago don't know what it recommends.
 

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It wouldn't matter what the manual says, ford issued a tsb to use merc v in place of ps fluid. Don't worry I don't think you hurt anything using ps fluid, like someone else said most don't touch it other than topping off. But now you can go get a quart of merc v, doesn't matter the brand, don't bother using full synthetic. 500-1000 miles? That's quite often, you can stretch that out to doing it the same time as oil changes.
 

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I drained mine by opening the system. When I refilled it, I was brownish almost immediately. I used regular mercon as per Ford. No problems yet.
 

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I always thought Ford recommended Type F for their power steering pumps?

I've been using that for years in mine without problems.
 

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Printable View (49 KB)
TSB
07-1-7 MERCON® ATF REPLACED BY MERCON® V AS A SERVICE FLUID FOR SOME POWER STEERING SYSTEMS

Publication Date: January 9, 2007

FORD: 1996-1997 Thunderbird
1996-2007 Crown Victoria, Mustang, Taurus
1998-2003 Escort
2000-2007 Focus
2002-2005 Thunderbird
2005-2006 Ford GT
2005-2007 Five Hundred, Freestyle
2006-2007 Fusion
1996-1997 Aerostar
1996-2007 E-Series, Explorer, Ranger
1997-2004 F-53 Motorhome Chassis
1997-2007 Expedition, F-150, F-Super Duty
1998-2003 Windstar
2000-2005 Excursion
2001-2003 Explorer Sport
2001-2005 Explorer Sport Trac
2001-2007 Escape
2004-2007 Freestar
2005-2007 Escape Hybrid
1996-1997 Cargo
1996-1998 L-Series
1996-1999 F- & B-Series
2000-2007 F-650, F-750
2006-2007 Low Cab Forward
LINCOLN: 1996-1998 Mark VIII
1996-1999 Continental
1996-2007 Town Car
2000-2006 Lincoln LS
2006 Zephyr
2007 MKZ
1998-2007 Navigator
2002-2003 Blackwood
2003-2005 Aviator
2006-2007 Mark LT
2007 MKX
MERCURY: 1996-1997 Cougar
1996-2005 Sable
1996-2007 Grand Marquis
1999-2002 Cougar
2003-2004 Marauder
2005-2007 Montego
2006-2007 Milan
1997-2007 Mountaineer
1998-2002 Villager
2004-2007 Monterey
2005-2007 Mariner Hybrid, Mariner


ISSUE:
MERCON® Automatic Transmission Fluid is being replaced by MERCON® V as a service fluid for power steering systems originally requiring MERCON®.

ACTION:
Beginning immediately all power steering applications requiring MERCON® can now be serviced using MERCON® V or MERCON® Automatic Transmission Fluid or dual usage fluids labeled MERCON® / MERCON® V. After July 1, 2007, MERCON® Automatic Transmission Fluid will no longer be manufactured, therefore, availability of this fluid will continue until remaining inventory has been depleted.

SERVICE PROCEDURE

Service power steering systems requiring MERCON® with MERCON® V or MERCON® Automatic Transmission Fluid or dual usage fluids labeled MERCON® / MERCON® V.

CAUTION: APPLICATIONS RECOMMENDING TYPE F AUTOMATIC TRANSMISSION AND POWER STEERING FLUID MUST CONTINUE TO USE THAT PARTICULAR FLUID. USE OF ANY OTHER FLUID MAY CAUSE REDUCED FUNCTIONALITY OR DAMAGE
 

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Discussion Starter · #13 ·
Okay so am i cool to continue flushing with Prestone PS Fluid before switching to Mercon V or should i give my new 32 oz fluid to someone else?
 

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Discussion Starter · #15 ·
Well from the sounds of it its recommened to use Mercon V, but i think the Prestone PS Fluid will be fine in there since i am just flushing it slowly anyways.

I am going to run this other 32 oz container through it quicker than i normally would and then start replacing it with Mercon V as soon as i run out. Its still really dirty anyways and i don't think its going to stay in there long enough to hurt anything.

I would say use Mercon V now that i know its recommend 96 and up Vulcans.

But wait if your a Gen 2 does that recommend Type F Fluid? If so i would stick with that.
 

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I used cheap ATF fluid for the flushing then Amsoil Universal ATF for the final fill in my '93 and '97. Change out the reservoir once a year and there was never a problem.

If you flushed every year then regular cheap ATF would work great.
 

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QUOTE (SHOZ123 @ May 31 2010, 08:45 AM) index.php?act=findpost&pid=808068
I used cheap ATF fluid for the flushing then Amsoil Universal ATF for the final fill in my '93 and '97. Change out the reservoir once a year and there was never a problem.

If you flushed every year then regular cheap ATF would work great.[/b]
Sweet thanks! I have some left over mercon V and its comming up on a year now since i switched out fluid so i thought it would be a great idea to switch the fluid for maintenance. The left over mercon V i have is high mileage stuff is that ok you guys think?
 

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If you change it every year the cheapest ATF fluid there is will be good enough.
 

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QUOTE (901-Memphis @ May 31 2010, 04:26 AM) index.php?act=findpost&pid=808045
Well from the sounds of it its recommened to use Mercon V, but i think the Prestone PS Fluid will be fine in there since i am just flushing it slowly anyways.

I am going to run this other 32 oz container through it quicker than i normally would and then start replacing it with Mercon V as soon as i run out. Its still really dirty anyways and i don't think its going to stay in there long enough to hurt anything.

I would say use Mercon V now that i know its recommend 96 and up Vulcans.

But wait if your a Gen 2 does that recommend Type F Fluid? If so i would stick with that.[/b]
Yup read the manual and on the last bit of pages it said use motorcraft ps fluid or type F atf for my Gen 2 bull. Just wanted to post this for other gen 2 bull owners.
 

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Discussion Starter · #20 ·
Thats good, do you flush the power steering fluid often in your 2nd gen Bull or do you do the turkey baster method?
 
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