Has anybody tried this stuff ?
I have just found a leak on one side of the steering rack on my 164 - it was fine when I bought it , I just got round to working on it tonight
(changed the oil after it has been stood for 8 years...) , and noticed something dripping while warming the engine up 
I've not used it... however I treat all these quick fix miracle cures with a huge dose of sceptisism.
I'm always happy to be proved wrong thou.
Until you have had power steering failure going into a corner/in a corner/coming out of a corner (delete as appropriate) you will think about doing
anything, except, that is, the correct option of replacing the faulty part.
It take approximately 5 seconds (or less) for the power steering pump to empty the reservoir and then your steering wheel might as well be a torque
wrench undoing the tightest nut you have EVER known.
Oh and you get NO warning of this, unless you happen to spot some leaks/drips.
[Edited on 15/8/09 by jollygreengiant]
I did use something similar on an old rover a few years ago, which had a small drip from around the P/S pump. Didn't seem to make any difference
at all
It was going to be a pig to fix otherwise (engine out job to get to the pump), so I scrapped the car and used the engine for my locost build 
I knew of an FX4 in Cambridge that developed a leak in the PAS , was using a litre a day and in typical taxi driver style (he didn't want to spend any money) he tried some of the Wynns stuff . A year later it still wasn't leaking . Agreed , doing the job properly would be the ideal but it's worth a try .
Probably best to treat it as a temporary fix, but having said that I was in a "temporary" job for a year and a half.
Use it and then when it leaks again fix it properly
The STP equivalent works -- but it won't fix torn or worn seals only works if the seal has lost its elasticity and shrunk and even then how well
it works depends to a great exent on the material the seal is made of.
As rubber like elastomers age they loose oils that are mixed into the polymer this results in the material shrinking and becoming hard. The Stop
Leak products replace the oils lost from the elastomer and restore some of the elasticity and swell the rubber.
However just how well the additive works depends to a large extent on the type of material the seal is made from, it tends to work best on 1960s style
oil seals.
Many leaks in power steering and automatic transmissions are caused by using modern synthetic transmission fluids such as Dextron III in older
systems designed for Dextron IID or similar mineral oil based fluids.
quote:
Originally posted by Ninehigh
Probably best to treat it as a temporary fix, but having said that I was in a "temporary" job for a year and a half.
Use it and then when it leaks again fix it properly
Used that in a customers XJS V12 at work (his request)
It stopped the leak all right, stopped his steering working as well!!!!