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Old 11-14-2002, 03:41 AM
Posts: n/a
power steering stop leak

Has anyone used a power steering stop leak that works? if so, what brand.
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Old 11-14-2002, 08:03 AM
junior member
Join Date: Oct 2001
Posts: 592
lucas. purchased at pep boys. $7 for 12 oz. if i remember correctly.
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Old 11-14-2002, 08:45 AM
Ken Downing
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I have no idea what kind of leak problem you are having.. But I have never really seen any of the power steering stop leaks that really work.. If its the front seal on the pump just replace it.. If its a hose just replace it.. Unless you are going to get rid of the car.. other than the seal most power steering leaks are high pressure and little will stop those except if you fix them..

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Old 11-14-2002, 12:08 PM
Posts: n/a
Prestone p.s. fluid works wonderfully!!!

My power steering box was leaking like a sieve. Every couple of days the reservoir in the pump would run dry if I was not careful. I tried every kind of fluid including MB fluid(very expensive) Nothing helped. One day I came across this Prestone Power Steering Fluid with Stop Leak. I figured what the hell. I bought 4 qt. bottles based on my leakage and still have three left. That's how fast it stopped the leak! That was a year ago and I drive a 100 miles or more a day. Absolutely no adverse effects art all. Go for it. Woody
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Old 11-14-2002, 01:01 PM
haasman's Avatar
Registered User
Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,096
Power Steering pump health care:

- Don't use ATF
- Replace the power steering filter
- Adjust the pump belt the way the factory recommends
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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Old 11-14-2002, 05:16 PM
Registered User
Join Date: Oct 2001
Location: Canada
Posts: 298
I have rebuilt my P/S pump myself, before it was leaking a few drops a day.

To me the structure of MB's P/S pump is very simple, it's very tough inside. there isn't a thing that can be easily broken, after 220k Km, my P/S pump doesn't show any wear inside, but the front radial seal and rubber O rings are so bad that nearly every 400E I have seen leaked P/S fluid, also sometimes the hose (high pressure hose and reservior hose) connectors leak.

I took me a day to rebuild my P/S pump on my 400E, for none V8 W124s, it may be much easier.
99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.
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Old 11-17-2002, 11:47 AM
EricSilver's Avatar
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Join Date: Mar 2000
Location: Fairfax, VA
Posts: 1,209
I started using Valvoline SynPower PS fluid about a month ago, after leaking like crazy. I am on the second of three bottles and the leak has slowed noticeably, but not yet entirely. I expect it will stop soon.

On the other hand, with the weather cooler now, metal parts around the seals are contracting and could also be contributing to slowing the leak.

Someone stated in another thread that introducing some brake fluid into the PS system can produce some amazing results in stopping leaks. Anyone ever try this?
2001 E430 4matic
122,xxx miles
Black/Charcoal Interior

Gone but not Forgotten:
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black
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