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S4 (B6 & B7 Platforms) Discussion Discussion forum for the B6 Audi S4 produced from 2003-2005 And B7 Audi S4 produced from 2005 -2008

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Old 01-08-2008, 11:14 AM   #1
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Default Power Steering Stop-Leak

I have read a lot of others have the same problem I am having with the power steering fluid leak. My leak is slow, like most others I've read about. The only time I see any evidence is a sligt oil slick in my driveway after a hard rain. Have any of you tried any kind of Stop-Leak product? I know it does not sound like the perfect answer but I used a coolant stop leak in an old VW 16V GTi and it worked great, never leaked again in the last 3 years I owned the car. My concern is that it might not be compatible with the Pentosin fluid. I just e-mailed Lucas Oils to find out if their product was compatible. I will report their answer as soon as I hear but wanted to see if any of you have tried this or heard any positives or negatives about using it, or any other brands product in our cars.
2004 S4 6spd
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Old 01-08-2008, 01:58 PM   #2
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Default Try the BarsLeak stuff..works well for me with head gaskets.

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Old 01-08-2008, 06:23 PM   #3
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Default I want to hear details about this and longevity

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Old 01-08-2008, 07:00 PM   #4
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Default Recently began experiencing some noise. From recent posts, I checked mine this weekend. It was low

topped it off and will see what the happens. I have 90k miles. Only problem with my b6 so far is I had to replace my starter. Will repost if the fluid is low anytime soon.

Also, I had a 98 stage 3+ B5 A4. My PS fluid leak required I added 1/4 pint every 5k miles. I didn't use any stop leak, and had no problems for about 30k miles. Later sold the vehicle. If your leak is as slow as mine was, I'd just add more fluid, and watch the level. Wouldn't gamble adding any stop leak as it may mess up functionality of the PS system. Total $5 per oil change vs aroud $1000k for a new system.
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Old 01-09-2008, 04:56 AM   #5
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Default I would not use that stuff in my car, no way

If it really is leaking out you need to find out where the leak is.
If it's say a rack seal, putting stop leak in could just mess up the pump also and cost more in the long run.
Some minor fluid loss seems to be normal on this system.
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Old 01-09-2008, 11:11 AM   #6
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Default Update: Power Steering Stop-Leak -Lucas Oil's Response

Thanks for looking to Lucas for your lubrication solutions. Lucas Power
Steering Stop Leak is indeed compatible with the power steering fluid in
your Audi. It's also compatible in other lines that call for specific power
steering products such as BMW, Jaguar, Mercedes and Honda. This additive
package is very versatile.
Thanks again,
John Mingus

Also, checked out Bar's Leaks and their site said it would also be compatible. The radiator stop-leak I used in my GTI was Bar's and as previously notoed it never leaked again and never had any ill affects.
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Old 01-09-2008, 11:13 AM   #7
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Default Re: I would not use that stuff in my car, no way

Is that from personal experience, something you've read, or an opinion?
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Old 01-09-2008, 11:33 AM   #8
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Default S4for5 is right. Please do not put that junk in your S4

Or, if you do, please let us know your VIN so we can avoid buying it when you sell.
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Old 01-09-2008, 02:37 PM   #9
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Default wait, so did you really think they would say it sucked and don't use it?

I have some swamp land in Florida for you to buy also
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Old 01-09-2008, 03:34 PM   #10
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Default LOL!

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Old 01-09-2008, 03:34 PM
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audi, b6, bmw, bmws, fluid, leak, leaks, lucas, pentosin, powee, power, s4, steering, stop, volkswagen, vw


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