Last year, I was planning on replacing my leaking steering rack. I kept putting it off and it finally turned cold and I put it off until this summer. Knowing that transmission fluid is the fluid of choice in the 928 steering system, I put a bottle of transmission stop-leak in the system, figuring it couldn't make things worse. I can't believe it but after a few weeks the leak stopped. I keep checking the reservoir and it's always good.

I'm not recommending this to anyone but it worked for me...so far. If it starts leaking again, I'm just going to order a rebuilt from one of the big three or from AutoZone where (I've heard) many are rebuilt for them, et al.

H2
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I've done the transmission stop-leak (Valvoline) on the P/S system and it does work. I don't think you can do much damage to the system as it's only really making the seals expand and making them more compliant. Worst case you rebuild the rack.

Bob Ungaretti
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Three years ago I sucked out the power steering reservoir and filled up with a bottle of Lucus Power Steering Stop Leak juice.

Still drip free.
Hacker-Pschorr
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