1988 Cadillac brougham - Power Steering fluid

Status
Not open for further replies.
Joined
Mar 19, 2011
Messages
274
Location
KSA
Hi all, I checked the PS fluid in my brougham and I noticed that is brownish not pink as tranny fluid. So, I am wondering what is your recommendation for flushing and the type of oil I should use? I just purchased the car last year and I have no idea if PS fluid was flushed or not. The car currently has ~72k miles. Thanks in advance,
 
Joined
Jun 15, 2003
Messages
38,582
Location
ME
I would just extract what you can with a turkey baster, refill the reservoir, and drive it for a day. Repeat a few times.
 
Joined
Aug 14, 2010
Messages
12,968
Location
Northern Kentucky
Suck the reservoir and fill with fresh fluid every day you drive it. After you run through a couple quarts it should be looking good. There's lots of household items that will help here Turkey basters work okay as well as marinate needles and dial hand soap or other bathroom soap pumps. Anything like that with a long enough tube to reach the reservoir will do the trick. I usually use a soap pump into an empty oil bottle then when it's full put it with the used oil jug. They make actual oil hand pumps for this such as gear oil pumps or fluid extraction pumps but recycled household items are free DexronVI will work as well as any other mineral dex/merc you can get your hand on.
 

momo

Thread starter
Joined
Mar 19, 2011
Messages
274
Location
KSA
Dexron vs. DexronVI? Does it really matter which one I use?
 
Joined
Aug 14, 2010
Messages
12,968
Location
Northern Kentucky
Originally Posted By: momo
Dexron vs. DexronVI? Does it really matter which one I use?
DexronVI is the only licensed product and it supercedes Dexron 2 and 3. If you buy a product labeled Dex/Merc you should buy one from a major company as they are unlicensed. That being said power steering systems aren't very demanding, if the unit originally called for Dexron, then DexronVI is the correct fluid now. DexronVI has the same frictional properties as DexronIIIH except it starts out at a lower viscosity and doesn't shear like DexronIII would. So even though DexronIII would start at 7.5 cSt @100C it would fall below 5 cSt in short order while the DexronVI starts around 5.8 cSt and stays there. I am not sure what the unit originally called for, because some GMs use regular power steering fluid and in that case regular Prestone power steering fluid works great. I've used Prestone psf, DexronVI and now Maxlife in my Buick psf and usually don't notice much difference
 

momo

Thread starter
Joined
Mar 19, 2011
Messages
274
Location
KSA
Originally Posted By: 901Memphis
Originally Posted By: momo
Dexron vs. DexronVI? Does it really matter which one I use?
DexronVI is the only licensed product and it supercedes Dexron 2 and 3. If you buy a product labeled Dex/Merc you should buy one from a major company as they are unlicensed. That being said power steering systems aren't very demanding, if the unit originally called for Dexron, then DexronVI is the correct fluid now. DexronVI has the same frictional properties as DexronIIIH except it starts out at a lower viscosity and doesn't shear like DexronIII would. So even though DexronIII would start at 7.5 cSt @100C it would fall below 5 cSt in short order while the DexronVI starts around 5.8 cSt and stays there. I am not sure what the unit originally called for, because some GMs use regular power steering fluid and in that case regular Prestone power steering fluid works great. I've used Prestone psf, DexronVI and now Maxlife in my Buick psf and usually don't notice much difference
Thanks for your explanation!!!
 

momo

Thread starter
Joined
Mar 19, 2011
Messages
274
Location
KSA
Originally Posted By: 901Memphis
Suck the reservoir and fill with fresh fluid every day you drive it. After you run through a couple quarts it should be looking good. There's lots of household items that will help here Turkey basters work okay as well as marinate needles and dial hand soap or other bathroom soap pumps. Anything like that with a long enough tube to reach the reservoir will do the trick. I usually use a soap pump into an empty oil bottle then when it's full put it with the used oil jug. They make actual oil hand pumps for this such as gear oil pumps or fluid extraction pumps but recycled household items are free DexronVI will work as well as any other mineral dex/merc you can get your hand on.
Wont that damage the pump as it starts to run dry and air gets in? How do I know when to stop sucking the fluid with turkey baster before damage starts to the pump?
 
Joined
Apr 27, 2014
Messages
876
Location
SD - South Dakota
Originally Posted By: momo
Originally Posted By: 901Memphis
Suck the reservoir and fill with fresh fluid every day you drive it. After you run through a couple quarts it should be looking good. There's lots of household items that will help here Turkey basters work okay as well as marinate needles and dial hand soap or other bathroom soap pumps. Anything like that with a long enough tube to reach the reservoir will do the trick. I usually use a soap pump into an empty oil bottle then when it's full put it with the used oil jug. They make actual oil hand pumps for this such as gear oil pumps or fluid extraction pumps but recycled household items are free DexronVI will work as well as any other mineral dex/merc you can get your hand on.
Wont that damage the pump as it starts to run dry and air gets in? How do I know when to stop sucking the fluid with turkey baster before damage starts to the pump?
You do it with the engine off.....
 
Joined
Aug 14, 2010
Messages
12,968
Location
Northern Kentucky
It probably does call for regular PSF but many people have switched to ATF and they usually don't mind either way they are simple hydraulic systems not very dependent on friction like transmissions are they just need a certain viscosity range and basic add pack
 

momo

Thread starter
Joined
Mar 19, 2011
Messages
274
Location
KSA
Great! I will try to find from local part source if they carry PSF, if not will go with ATF. Thank you all for the input, really appreciated.
 
Joined
Oct 3, 2008
Messages
4,847
Location
Kuwait
If it's not leaking, and you're not experiencing any issues, I would use CHF-11S and forget about it for a good while. smile
 
Joined
Oct 23, 2005
Messages
7,998
Originally Posted By: eljefino
I would just extract what you can with a turkey baster, refill the reservoir, and drive it for a day. Repeat a few times.
This. In a week you'll have new fluid throughout the system.
 
Joined
Nov 21, 2007
Messages
3,996
Location
United States of America
Kuato, I think it took me about a gallon in my truck. I would draw out the reservoir ( about a pint) and refill and go awhile. Repeated that for awhile and got tired of buying individual quarts. So I bought a gallon, and guess what, now it is as clear as new- so I have about 1/2 gal sitting in my shop. My truck had 160-170k when I did all of this and 12 years old, so I figure 10 years and 100k miles is probably the upper end of when to change the psf.
 
Joined
Oct 23, 2005
Messages
7,998
Originally Posted By: mjoekingz28
Kuato, I think it took me about a gallon in my truck. I would draw out the reservoir ( about a pint) and refill and go awhile. Repeated that for awhile and got tired of buying individual quarts. So I bought a gallon, and guess what, now it is as clear as new- so I have about 1/2 gal sitting in my shop. My truck had 160-170k when I did all of this and 12 years old, so I figure 10 years and 100k miles is probably the upper end of when to change the psf.
I'd agree, around 10 years for a lot of fluid exchange, or every 5 years just drain and refill the reservoir. Now I've got this newfangled electromechanical power steering, no fluid required....with a bunch of extra power steering fluid in the garage..... laugh
 
Status
Not open for further replies.
Top