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Power steering fluid and ATF fluid |
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cadipacer
AMC Nut Joined: Apr/22/2009 Location: louisville KY Status: Offline Points: 368 |
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Posted: Mar/19/2018 at 5:24pm |
I have a 82 steering gear box, and using a mid 70's Steering Pump..
Gear box in 82 would require Power steering FLUID. Mid 70's Pump I think uses ATF. Which fluid to use? Did AMC switch to PS fluid along about 78? |
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SOLD!/SOLD!78 Pacer wagon w/ 500 cid Cadillac V8, 2:87 spool.
1956 Nash Statesman.PS,PB AC 360 rack & pin.2:56 gears. 1982 Concord 401 4 dr. incognito former-NAMDRA # 75 AMO 645,NCCA 7980 |
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tufcj
Supporter of TheAMCForum Supporter of TheAMCForum Joined: Jul/10/2007 Location: Watkins, CO Status: Offline Points: 4065 |
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Leave trans fluid in the trans. I've been running Valvoline full synthetic power steering fluid in all my vehicles since an internal hose breakdown on my Jeep ruined the pump and box. I now also run a filter on the low pressure side of all my vehicles.
Bob tufcj |
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69 AMX
74 Javelin AMX 67 Rogue If you need a tool and don't buy it... you'll eventually pay for it... and not have it. Henry Ford |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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A filter is not a bad idea.
I've used ATF in PS - but have since migrated to using PS fluid. My reasoning behind ATF is that it's high detergent, it's made to be hydraulic fluid, it gets pumped under pressure, has to handle heat, etc. a lot like the internals of a power steering system.
I'm still not afraid to run ATF in AMC systems but since PS fluid is available everywhere, even WALMART, why not use it... A filter is a good idea either way - I may end up doing the same "just because".......... What filters do you use, Bob? |
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cadipacer
AMC Nut Joined: Apr/22/2009 Location: louisville KY Status: Offline Points: 368 |
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Bill -d :that's my thought too,after some searching it seems to be fine to use PS fluid in the older pump.
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SOLD!/SOLD!78 Pacer wagon w/ 500 cid Cadillac V8, 2:87 spool.
1956 Nash Statesman.PS,PB AC 360 rack & pin.2:56 gears. 1982 Concord 401 4 dr. incognito former-NAMDRA # 75 AMO 645,NCCA 7980 |
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5454 |
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I thought this was interesting. Only covers recent vehicles but still interesting.
https://www.cardone.com/docs/default-source/product-pgs/psfluidtypes.pdf?sfvrsn=16 |
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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tufcj
Supporter of TheAMCForum Supporter of TheAMCForum Joined: Jul/10/2007 Location: Watkins, CO Status: Offline Points: 4065 |
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I've been using Magnefine filters. Kind of pricey, but cheap insurance.
http://magnefinefilters.com/main.sc Bob tufcj |
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69 AMX
74 Javelin AMX 67 Rogue If you need a tool and don't buy it... you'll eventually pay for it... and not have it. Henry Ford |
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maximus7001
Supporter of TheAMCForum Joined: Jun/27/2011 Location: Winnipeg,Canada Status: Offline Points: 1080 |
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Only ever had one car that called for atf in the steering. 1996 taurus, said use only atf on the cap. Very messy when the rack springs a leak.
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1968 Javelin SST
1997 GMC Safari AWD 2001 Daewoo Nubira SX (Winnipeg only model) 1997 Honda Accord EX (Canadian Model) Winnipeg, home of the Jets. |
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akimmet
AMC Nut Joined: Aug/02/2012 Location: Republic OH Status: Offline Points: 428 |
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Yikes! I was able to spot several mistakes in that list. Some vehicles actually used a different fluid depending in what market it was originally sold in. In most cases using what the cap on the power steering reservoir says is the safest choice. As for the issue at hand, I have successfully used ATF and PS fluid in Saginaw 800 and 700 steering boxes. I have also successfully used either fluid in the Eaton and Saginaw pumps used by AMC. In the case of the average AMC owner either is OK as long as the fluids aren't mixed. This is not the case for other makes. I have fixed several vehicles where the owner used PS fluid instead of ATF or that expensive green Pentosin fluid the vehicle called for. |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19611 |
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ATF is after all a hydraulic fluid. It has higher detergent content than other hydraulic fluids, but other than additive package is just about the same as PS fluid. I'm sure there are different additives in PS fluid, maybe less detergent. I would say more ant-foaming additive, but I doubt it, as an auto trans could foam just as easily.
I wonder about the Pentosin. Never heard of it before! I do notice that it's mostly German cars, and some other Europeans (Mini is essentially a BMW, so I count it as German). It's obviously some special formulation, with the oddity of not being backward compatible in most cases, unlike fluids like Dexron and even brake fluid -- with the exception of silicone brake fluid. Newest foreign car I ever owned was a 97 or 98 Volvo 960. I don't recall what it used... or even topping it off... |
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Frank Swygert
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5454 |
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For years Mopar didn't want ATF in their power steering systems. IIRC, there was a TSB that some of the seals used in the Chrysler chuck wouldn't tolerate ATF. Then when all Saginaw systems were used in some vehicles (trucks), ATF was fine. I've always thought that the OEM recommendation was the best unless there was a burning need to change (eg, the OEM fluid wasn't available any longer).
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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