924Board.org

skytrooper · Joined: 29 Aug 2007 Posts: 461 Location: Canandaigua, NY

I do not have an owners manual for either of my 924's, but I think that I read somewhere that you are supposed to use ATF in the power steering, not regular PS fluid. Is this correct ?? If so I need to flush the 924S since I put the regular stuff in it.
_________________
Matt

1987 - 924S "Black Pearl"
1982 - BMW 633CSi
1984 - BMW 528e
1983 - 944 N/A "Blue Max" (Gone)
1981 - 931 "Scarlet Harlot" (Gone)
1976 911S Targa (Gone)

joecitizennn · Joined: 12 Sep 2005 Posts: 2096 Location: no mans land

Transmission fluid is correct. MD3 will work.
_________________
87 924s
88 924SE gone
447 hp cgt clone
87 924S gone
84 944 sold
83 944 sold
89 turbo S LSD, ABS etc
86 951 white rocket
85 944 sport everything.
84 944 sold.
87 944 sold

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Better hurry, the PS fluid will eat your rack seals, among other things.
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

joecitizennn · Joined: 12 Sep 2005 Posts: 2096 Location: no mans land

That probably explains why some 924S power steering systems seem fine and some are terrible leakers. My black 87 does not loose a drip ever, while my 88 LeMans, in otherwise great shape, pours on the ground. At some point in their lives, the leakers must have had someone put the wrong stuff in. Some helpful guy at jiffy lube, or maybe the lady who owned the car asked the wrong person what to put in, or whatever. It might have helped if Porsche put (Mercon Dexron ll lll ATF) on the cap.
_________________
87 924s
88 924SE gone
447 hp cgt clone
87 924S gone
84 944 sold
83 944 sold
89 turbo S LSD, ABS etc
86 951 white rocket
85 944 sport everything.
84 944 sold.
87 944 sold

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

If they can't read the manual, why read the cap?
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

joecitizennn · Joined: 12 Sep 2005 Posts: 2096 Location: no mans land

That reminds me, I dont even have an owners manual. In fact, I have never even looked in one. I always just went by the shop manual. I need to get an owners manual just for the fun ot it.
_________________
87 924s
88 924SE gone
447 hp cgt clone
87 924S gone
84 944 sold
83 944 sold
89 turbo S LSD, ABS etc
86 951 white rocket
85 944 sport everything.
84 944 sold.
87 944 sold

skytrooper · Joined: 29 Aug 2007 Posts: 461 Location: Canandaigua, NY

All is well that ends well....I flushed the system twice today to get rid of the PS fluid. It was only about 1/8 to 1/10 of the the system fluid, since it was only a "top off". I am just glad to have it out before there was a chance of it causing a problem.

Thanks for all the great advice

_________________
Matt

1987 - 924S "Black Pearl"
1982 - BMW 633CSi
1984 - BMW 528e
1983 - 944 N/A "Blue Max" (Gone)
1981 - 931 "Scarlet Harlot" (Gone)
1976 911S Targa (Gone)

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Power steering fluid is in most cases ATF.

Both fluids run in similar environments, have similar operating temperatures, and are composed primary of solvents. Both fluids will eat/soften/ruin any unprotected rubber compound suspension bushings, rubber engine or suspension bushing, etc..