power steering fluid
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Fleet Mechanic
Joined: Feb 2004
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From: midwest
power steering fluid
if i am not mistaken my 89 pickup spcifies type F fluid...is this the stuff that comes labled as power steering fluid (clear color)?...i would like to use Mobil 1 ATF if tranny fluid works better than power steering fluid...i also heard something about mobil changing something about their atf fluid and people were buying up the last of them in the old bottles...What's the skinny on mobil1 atf?...btw, i have changed all ps components (pump, hoses, gear, and added cooler)
Senior User
Joined: Oct 2004
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From: North Alabama
FWIW, my '97 Expedition also spec's. Type F ATF for the power steering unit. 120k trouble free miles so far using Type F.
I use Castrol Type F, & suction out the reservoir & replace that amount of fluid every few months.
I use Castrol Type F, & suction out the reservoir & replace that amount of fluid every few months.
Fleet Mechanic
Joined: Aug 2002
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From: Sioux Falls SD
I have heard of people taking the return line off and capping that spot on the pum and running the enging to pump all the old fluid out as they pour in new.
could air get in the system when you recoonct the hose?
could air get in the system when you recoonct the hose?
Tuned
Joined: Apr 2005
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Originally Posted by 99F150
I have heard of people taking the return line off and capping that spot on the pum and running the enging to pump all the old fluid out as they pour in new.
could air get in the system when you recoonct the hose?
could air get in the system when you recoonct the hose?
Hootbro
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Joined: Jun 2001
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From: Running Springs CA
All ATF's work as hydraulic fluid. For some non-technical reason, probably laziness, the power steering group never updated the service spec when Mercon first came along. Friction modification only matters for transmission clutch packs.
Jim
Jim
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From: Brentwood,CA
Originally Posted by jimandmandy
All ATF's work as hydraulic fluid. For some non-technical reason, probably laziness, the power steering group never updated the service spec when Mercon first came along. Friction modification only matters for transmission clutch packs.
Jim
Jim
unless you have the older ford P/S pumps which are prone to failure when used with friction modifier.
Fleet Owner
Joined: Jan 2004
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From: Brentwood,CA
cardone the rebuilder of these explained that the older pumps used compressed fiber discs as the fins on the pump and that with the modifier they would pulsate up and down and cause pressure surges. they claim they did testing on them to verify this. just like the new ford rack and pinions can't use anything else but a modified fluid or the valves stick and cause a vibration to be felt in the wheel.
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Joined: May 2005
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Originally Posted by someday
if i am not mistaken my 89 pickup spcifies type F fluid...is this the stuff that comes labled as power steering fluid (clear color)?...i would like to use Mobil 1 ATF ...What's the skinny on mobil1 atf?...btw, i have changed all ps components (pump, hoses, gear, and added cooler)
SamF
